#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b;
    char c;
    cin>>a>>c>>b;
    if (c='+'){
        cout<<a+b;
    }
    else if(c='-'){
        cout<<a-b;
    }
    else if (c='*'){
        cout<<a*b;
    }
    else if (c='/'){
        cout<<a/b;
    }
    else if (c='%'){
        cout<<a%b;
    }
    return 0;
}