```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

#include<bits/stdc++.h>
using namespace std;
int main(){
int a, b;
cin >> a >> b;
cout << a + b << endl;
return 0;
}

#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;
}

#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🙃

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

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***

#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

我发高精度怎么了

#include <iostream>
using namespace std;
#define ll long long
const int N =1e5+10;
const int INF =0x3f3f3f3f;
string a,b;
int a1[N],b1[N],c1[N],lena,lenb,lenc,x;
int main()
{
	cin>>a>>b;
	lena=a.size();
	lenb=b.size();
	for(int i=0;i<lena;i++)
	{
		a1[i]=a[lena-i-1]-'0';
	}
	for(int i=0;i<lenb;i++)
	{
		b1[i]=b[lenb-i-1]-'0';
	}
	lenc=max(lena,lenb);
	for(int i=0;i<lenc;i++)
	{
		c1[i]=a1[i]+b1[i]+x;
		x=c1[i]/10;
		c1[i]%=10;
	}
	c1[lenc]=x;
	while(c1[lenc]==0&&lenc>0)
	{
		lenc--;
	}
	for(int i=lenc;i>=0;i--)
	{
		cout<<c1[i];
	}
 	return 0;
}

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

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