#include<bits/stdc++.h>
using namespace std;
const int N=1e3+10;
int Accepted(int a,int b,char c){//Accepted()
    if(c=='+')
    {
    	return a+b;
	}
	else if(c=='-')
	{
		return a-b;
	}
	else if(c=='*')
	{
		return a*b;
	}
	else if(c=='/')
	{
		return a/b;
	}
	else if(c=='%')
	{
		return a%b;
	}
	return 0;
}
int main()
{
	int a,b;
	char c;
	cin >> a >> c >> b;
	cout << Accepted(a,b,c);
	return 0;
}
//老登布置的作业系列

#include<bits/stdc++.h> using namespace std; const int N=1e3+10; const int INF=0x3f3f3f3f; int a,b; char c; int main() { cin>>a>>c>>b; switch(c) { case '+': cout<<a+b; break; case '-': cout<<a-b; break; case '': cout<<ab; } return 0; }