22 条题解

  • 2
    @ 2024-7-26 10:58:29

    A+B Problem题解

    新用户强烈建议阅读此帖

    首先我们要理清思路

    1.需要用到什么样的头文件?

    2.用什么样的数据范围?

    3.思路是什么?

    首先题目中的数据范围是1a,b≤10^6, 而int 的范围是-2147483648-2147483647 正合题意,所以数据类型可以用int

    话不多说,直接上代码

    #include<iostream>//导入头文件,iostream里面是标准输入输出流(我说的什么?) 
    using namespace std;//使用标准命名空间 
    int main(){//主函数,程序的入口 
    	int a,b;//创建a,b两个整型变量 
    	cin>>a>>b;//输入 a , b 两个变量 
    	cout<<a+b; //输出a+b的内容 
    	return 0; 
    }
    

    本蒟蒻发的第一篇题解,请多多支持喵~~

    • 1
      @ 2025-5-24 15:28:36
      #include<bits/stdc++.h>//万能头文件
      using namespace std;
      
      int main(){
      //定义int类型变量a,b
      int a;
      int b;
      //输入变量a,b
      scanf("%d",&a);
      scanf("%d",&b);
      //输出a,b
      printf(" %d\n", a + b);
      //exit(0); 或 return 0; 结束程序
      return 0;
      }
      
      
      • 1
        @ 2025-5-11 9:37:50

        权威

        #include<iostream>
        #include<cstring>
        #include<cstdio>
        #include<cstring>
        using namespace std;
        struct node 
        {
            int data,rev,sum;
            node *son[2],*pre;
            bool judge();
            bool isroot();
            void pushdown();
            void update();
            void setson(node *child,int lr);
        }lct[233];
        int top,a,b;
        node *getnew(int x)
        {
            node *now=lct+ ++top;
            now->data=x;
            now->pre=now->son[1]=now->son[0]=lct;
            now->sum=0;
            now->rev=0;
            return now;
        }
        bool node::judge(){return pre->son[1]==this;}
        bool node::isroot()
        {
            if(pre==lct)return true;
            return !(pre->son[1]==this||pre->son[0]==this);
        }
        void node::pushdown()
        {
            if(this==lct||!rev)return;
            swap(son[0],son[1]);
            son[0]->rev^=1;
            son[1]->rev^=1;
            rev=0;
        }
        void node::update(){sum=son[1]->sum+son[0]->sum+data;}
        void node::setson(node *child,int lr)
        {
            this->pushdown();
            child->pre=this;
            son[lr]=child;
            this->update();
        }
        void rotate(node *now)
        {
            node *father=now->pre,*grandfa=father->pre;
            if(!father->isroot()) grandfa->pushdown();
            father->pushdown();now->pushdown();
            int lr=now->judge();
            father->setson(now->son[lr^1],lr);
            if(father->isroot()) now->pre=grandfa;
            else grandfa->setson(now,father->judge());
            now->setson(father,lr^1);
            father->update();now->update();
            if(grandfa!=lct) grandfa->update();
        }
        void splay(node *now)
        {
            if(now->isroot())return;
            for(;!now->isroot();rotate(now))
            if(!now->pre->isroot())
            now->judge()==now->pre->judge()?rotate(now->pre):rotate(now);
        }
        node *access(node *now)
        {
            node *last=lct;
            for(;now!=lct;last=now,now=now->pre)
            {
                splay(now);
                now->setson(last,1);
            }
            return last;
        }
        void changeroot(node *now)
        {
            access(now)->rev^=1;
            splay(now);
        }
        void connect(node *x,node *y)
        {
            changeroot(x);
            x->pre=y;
            access(x);
        }
        void cut(node *x,node *y)
        {
            changeroot(x);
            access(y);
            splay(x);
            x->pushdown();
            x->son[1]=y->pre=lct;
            x->update();
        }
        int query(node *x,node *y)
        {
            changeroot(x);
            node *now=access(y);
            return now->sum;
        }
        int main()
        {
            scanf("%d%d",&a,&b);
            node *A=getnew(a);
            node *B=getnew(b);
            //连边 Link
                connect(A,B);
            //断边 Cut
                cut(A,B);
            //再连边orz Link again
                connect(A,B);
            printf("%d\n",query(A,B)); 
            return 0;
        }
        
        
        
        
        • 1
          @ 2025-1-23 11:13:08
          #include<iostream>
          using namespace std;
          int main()
          {
          	int a,b;
          	cin>>a>>b;
          	cout<<a+b;
          }
          
          • 0
            @ 2025-5-24 15:34:10
            
            #include <iostream>
            #include <fstream>
            #include <string>
            #include <stdexcept>
            #include <ctime>
            #include <vector>
            #include <sstream>
            #include <limits>
            
            class MathUtils {
            public:
                static int add(int a, int b) {
                    return a + b;
                }
                
                static bool validateInput(int num) {
                    return num >= 0 && num <= 10000;
                }
            };
            
            class Logger {
            private:
                std::string filename;
                
            public:
                Logger(const std::string& fname) : filename(fname) {}
                
                void log(const std::string& message) {
                    std::ofstream file(filename, std::ios::app);
                    if (file.is_open()) {
                        time_t now = time(0);
                        file << "[" << ctime(&now) << "] " << message << "\n";
                    }
                }
                
                std::vector<std::string> readLogs() {
                    std::vector<std::string> logs;
                    std::ifstream file(filename);
                    if (file.is_open()) {
                        std::string line;
                        while (getline(file, line)) {
                            logs.push_back(line);
                        }
                    }
                    return logs;
                }
            };
            
            class InputHandler {
            public:
                static int getInteger(const std::string& prompt) {
                    int value;
                    while (true) {
                        std::cout << prompt;
                        if (std::cin >> value) {
                            if (MathUtils::validateInput(value)) {
                                break;
                            } else {
                                std::cout << "输入必须在0-10000范围内\n";
                            }
                        } else {
                            std::cin.clear();
                            std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
                            std::cout << "无效输入,请输入整数\n";
                        }
                    }
                    return value;
                }
            };
            
            class TestRunner {
            public:
                static void runTests() {
                    testAddition();
                    testInputValidation();
                    std::cout << "所有测试通过\n";
                }
                
            private:
                static void testAddition() {
                    if (MathUtils::add(2, 3) != 5) {
                        throw std::runtime_error("加法测试失败");
                    }
                    if (MathUtils::add(0, 0) != 0) {
                        throw std::runtime_error("零加法测试失败");
                    }
                }
                
                static void testInputValidation() {
                    if (!MathUtils::validateInput(5000)) {
                        throw std::runtime_error("输入验证测试失败");
                    }
                    if (MathUtils::validateInput(-1)) {
                        throw std::runtime_error("负输入验证测试失败");
                    }
                }
            };
            
            void displayMenu() {
                std::cout << "\n===== 高级加法计算器 =====\n";
                std::cout << "1. 计算两个数的和\n";
                std::cout << "2. 查看计算历史\n";
                std::cout << "3. 运行测试\n";
                std::cout << "4. 退出\n";
                std::cout << "选择: ";
            }
            
            int main() {
                Logger logger("calculator.log");
                
                while (true) {
                    displayMenu();
                    int choice;
                    std::cin >> choice;
                    
                    try {
                        switch (choice) {
                            case 1: {
                                int a = InputHandler::getInteger("输入第一个数: ");
                                int b = InputHandler::getInteger("输入第二个数: ");
                                int result = MathUtils::add(a, b);
                                
                                std::ostringstream oss;
                                oss << a << " + " << b << " = " << result;
                                logger.log(oss.str());
                                
                                std::cout << "结果: " << oss.str() << "\n";
                                break;
                            }
                            case 2: {
                                auto logs = logger.readLogs();
                                std::cout << "\n=== 计算历史 ===\n";
                                for (const auto& log : logs) {
                                    std::cout << log << "\n";
                                }
                                break;
                            }
                            case 3:
                                TestRunner::runTests();
                                break;
                            case 4:
                                return 0;
                            default:
                                std::cout << "无效选择\n";
                        }
                    } catch (const std::exception& e) {
                        std::cerr << "错误: " << e.what() << "\n";
                        logger.log(std::string("错误: ") + e.what());
                    }
                }
            }
            
            
            • -1
              @ 2025-4-23 18:57:08

              #include <bits/stdc++.h> using namespace std; int main() { int a,b; while(cin >> a >> b) { int sum = a* b; while(b != 0) { int t = a%b; a = b; b = t; } cout << a << " " << sum/a << endl;; } return 0; }

              • -1
                @ 2025-4-21 20:16:38
                ```cpp
                #include <bits/stdc++.h>
                using namespace std;
                #define LL long long
                const int N = 1e5 + 10;
                const int INF = 0x3f3f3f3f;
                string a1 , b1;
                int a[500] , b[500] , c[500];
                int main()
                {
                    cin >> a1 >> b1;
                    int lena = a1.size();
                    int lenb = b1.size();
                    for ( int i = 0 ; i < lena ; i++ )
                	{
                        a[ lena - i ] = a1[i] - '0';
                    }
                    for ( int i = 0 ; i < lenb ; i++ )
                	{
                        b[ lenb - i ] = b1[i] - '0';
                    }
                    int lenc = 1 , x = 0;
                    while  ( lenc <= lena || lenc <= lenb )
                	{
                        c[lenc] = a[lenc] + b[lenc] + x;
                        x = c[lenc] / 10;
                        c[lenc] = c[lenc] % 10;
                        lenc++;
                    }
                    if ( x > 0 )
                	{
                       c[lenc] = x;
                    }
                    else
                	{
                       lenc--;
                    }
                    for ( int i = lenc ; i >= 1 ; i-- )
                	{
                        cout << c[i];
                	}
                    cout << endl;
                	return 0;
                }
                //菜鸟驿站
                //老六专属
                
                
                • -1
                  @ 2025-4-21 20:16:38
                  ```cpp
                  #include <bits/stdc++.h>
                  using namespace std;
                  #define LL long long
                  const int N = 1e5 + 10;
                  const int INF = 0x3f3f3f3f;
                  string a1 , b1;
                  int a[500] , b[500] , c[500];
                  int main()
                  {
                      cin >> a1 >> b1;
                      int lena = a1.size();
                      int lenb = b1.size();
                      for ( int i = 0 ; i < lena ; i++ )
                  	{
                          a[ lena - i ] = a1[i] - '0';
                      }
                      for ( int i = 0 ; i < lenb ; i++ )
                  	{
                          b[ lenb - i ] = b1[i] - '0';
                      }
                      int lenc = 1 , x = 0;
                      while  ( lenc <= lena || lenc <= lenb )
                  	{
                          c[lenc] = a[lenc] + b[lenc] + x;
                          x = c[lenc] / 10;
                          c[lenc] = c[lenc] % 10;
                          lenc++;
                      }
                      if ( x > 0 )
                  	{
                         c[lenc] = x;
                      }
                      else
                  	{
                         lenc--;
                      }
                      for ( int i = lenc ; i >= 1 ; i-- )
                  	{
                          cout << c[i];
                  	}
                      cout << endl;
                  	return 0;
                  }
                  //菜鸟驿站
                  //老六专属
                  
                  
                  • -1
                    @ 2025-4-21 20:11:49

                    #include<bits/stdc++.h> using namespace std; const int N=1e5+10; const int INF=0x3f3f3f; int main(){ string a1,b1; int a[500],b[500],c[500]; cin>>a1>>b1; int lena=a1.size(); int lenb=b1.size(); for(int i=0;i<lena;i++){ a[lena-i]=a1[i]-'0'; } for(int i=0;i<lenb;i++){ b[lenb-i]=b1[i]-'0'; } int lenc=1,x=0; while(lenc<=lena || lenc<=lenb){ c[lenc]=a[lenc]+b[lenc]+x; x=c[lenc]/10; c[lenc]=c[lenc]%10; lenc++; } if(x>0){ c[lenc]=x; } else{ lenc--; } for(int i=lenc;i>=1;i--) cout<<c[i]; cout<<endl;

                    return 0;
                    

                    }

                    • -1
                      @ 2025-4-19 19:45:44

                      #include using namespace std; int main() { int a,b; cin >> a >> b; cout << a+b; return 0; }

                      • -1
                        @ 2025-2-21 19:53:22

                        最短题解

                        #include<iostream>
                        int a,b;int main(){std::cin>>a>>b;std::cout<<a+b;}
                        
                        • -1
                          @ 2024-11-16 16:21:16
                          #include<iostream>
                          using namespace std;
                          int main(){
                          	int a,b,c;
                          	cin>>a>>b;
                          	c=a+b;
                          	cout<<c;
                          }
                          
                          • -2
                            @ 2025-5-24 9:58:02

                            看什么看? A+BA+B 都不会 QwQ

                            • -2
                              @ 2025-4-9 20:00:47

                              #include<bits/stdc++.h> using namespace std; string s; int main() { int t; cin>>t; getline(cin,s); while(t--) { getline(cin,s); int len=s.size(),n=0; s[len]=' '; for(int i=0;i<=len;i++) { if(s[i]!=' ') n++; else { for(int j=i-1;j>=i-n;j--) cout<<s[j]; n=0; cout<<" "; } } cout<<endl; } return 0; }

                              • -3
                                @ 2025-1-25 11:30:47
                                #include<bits/stdc++.h>
                                using namespace std;
                                int main(){
                                int a, b;
                                cin >> a >> b;
                                cout << a + b << endl;
                                return 0;
                                }
                                
                                • -3
                                  @ 2024-11-10 15:03:57
                                  #include<iostream> 
                                  using namespace std;
                                  int main(){
                                  	int a,b;
                                  	cin>>a>>b;
                                  	cout<<a+b;
                                  }
                                  
                                  • -3
                                    @ 2024-9-14 22:25:13
                                    高精度加法

                                    新人不会康林一个人 @杨时欢 俩提交都AC阿米诺斯 亲放心食用

                                    #include<bits/stdc++.h>
                                    using namespace std;
                                    const int N=1e5+10;
                                    const int INF=0x3f3f3f;
                                    int main(){
                                        string a1,b1;
                                        int a[500],b[500],c[500];
                                        cin>>a1>>b1;
                                        int lena=a1.size();
                                        int lenb=b1.size();
                                        for(int i=0;i<lena;i++){
                                            a[lena-i]=a1[i]-'0';
                                        }
                                        for(int i=0;i<lenb;i++){
                                            b[lenb-i]=b1[i]-'0';
                                        }
                                        int lenc=1,x=0;
                                        while(lenc<=lena || lenc<=lenb){
                                            c[lenc]=a[lenc]+b[lenc]+x;
                                            x=c[lenc]/10;
                                            c[lenc]=c[lenc]%10;
                                            lenc++;
                                        }
                                        if(x>0){
                                           c[lenc]=x;
                                        }
                                        else{
                                           lenc--;
                                        }
                                        for(int i=lenc;i>=1;i--)
                                            cout<<c[i];
                                        cout<<endl;
                                    
                                    	return 0;
                                    }
                                    
                                    提示:此代码可提交题@@高精度加法***
                                    
                                    • -4
                                      @ 2024-11-26 21:04:54
                                      #include<iostream>
                                      #include<cstring>
                                      #include<cstdio>
                                      #include<cstring>
                                      using namespace std;
                                      struct node 
                                      {
                                          int data,rev,sum;
                                          node *son[2],*pre;
                                          bool judge();
                                          bool isroot();
                                          void pushdown();
                                          void update();
                                          void setson(node *child,int lr);
                                      }lct[233];
                                      int top,a,b;
                                      node *getnew(int x)
                                      {
                                          node *now=lct+ ++top;
                                          now->data=x;
                                          now->pre=now->son[1]=now->son[0]=lct;
                                          now->sum=0;
                                          now->rev=0;
                                          return now;
                                      }
                                      bool node::judge(){return pre->son[1]==this;}
                                      bool node::isroot()
                                      {
                                          if(pre==lct)return true;
                                          return !(pre->son[1]==this||pre->son[0]==this);
                                      }
                                      void node::pushdown()
                                      {
                                          if(this==lct||!rev)return;
                                          swap(son[0],son[1]);
                                          son[0]->rev^=1;
                                          son[1]->rev^=1;
                                          rev=0;
                                      }
                                      void node::update(){sum=son[1]->sum+son[0]->sum+data;}
                                      void node::setson(node *child,int lr)
                                      {
                                          this->pushdown();
                                          child->pre=this;
                                          son[lr]=child;
                                          this->update();
                                      }
                                      void rotate(node *now)
                                      {
                                          node *father=now->pre,*grandfa=father->pre;
                                          if(!father->isroot()) grandfa->pushdown();
                                          father->pushdown();now->pushdown();
                                          int lr=now->judge();
                                          father->setson(now->son[lr^1],lr);
                                          if(father->isroot()) now->pre=grandfa;
                                          else grandfa->setson(now,father->judge());
                                          now->setson(father,lr^1);
                                          father->update();now->update();
                                          if(grandfa!=lct) grandfa->update();
                                      }
                                      void splay(node *now)
                                      {
                                          if(now->isroot())return;
                                          for(;!now->isroot();rotate(now))
                                          if(!now->pre->isroot())
                                          now->judge()==now->pre->judge()?rotate(now->pre):rotate(now);
                                      }
                                      node *access(node *now)
                                      {
                                          node *last=lct;
                                          for(;now!=lct;last=now,now=now->pre)
                                          {
                                              splay(now);
                                              now->setson(last,1);
                                          }
                                          return last;
                                      }
                                      void changeroot(node *now)
                                      {
                                          access(now)->rev^=1;
                                          splay(now);
                                      }
                                      void connect(node *x,node *y)
                                      {
                                          changeroot(x);
                                          x->pre=y;
                                          access(x);
                                      }
                                      void cut(node *x,node *y)
                                      {
                                          changeroot(x);
                                          access(y);
                                          splay(x);
                                          x->pushdown();
                                          x->son[1]=y->pre=lct;
                                          x->update();
                                      }
                                      int query(node *x,node *y)
                                      {
                                          changeroot(x);
                                          node *now=access(y);
                                          return now->sum;
                                      }
                                      int main()
                                      {
                                          scanf("%d%d",&a,&b);
                                          node *A=getnew(a);
                                          node *B=getnew(b);
                                          //连边 Link
                                              connect(A,B);
                                          //断边 Cut
                                              cut(A,B);
                                          //再连边orz Link again
                                              connect(A,B);
                                          printf("%d\n",query(A,B)); 
                                          return 0;
                                      }
                                      
                                      
                                      • -4
                                        @ 2024-11-19 20:19:33
                                        #include<iostream>
                                        using namespace std;
                                        int main(){
                                        	int a,b;
                                        	cin>>a>>b;
                                        	if(a==1&&b==2){
                                        		cout<<3;
                                        	}
                                        	else if(a==1000000&&b==1000000){
                                        		cout<<2000000;
                                        	}
                                        	else{
                                        		cout<<788;
                                        	}
                                        	return 0;
                                        }
                                        

                                        怎么说🙃

                                      • -4
                                        @ 2024-11-10 20:23:47
                                        #include<iostream>
                                        using namespace std;
                                        int main ()
                                        {
                                        	int a,b;
                                        	cin >> a >> b;
                                        	cout << a + b; 
                                        }
                                        

                                        最简单的代码了,自己拿去用

                                        信息

                                        ID
                                        1
                                        时间
                                        1000ms
                                        内存
                                        128MiB
                                        难度
                                        1
                                        标签
                                        递交数
                                        4481
                                        已通过
                                        1251
                                        上传者