#include<bits/stdc++.h>
using namespace std;

int main() {
    int a,b;
    char c;
    cin>>a>>c>>b;
    switch(c) {
        case '+':cout<<a+b;break;
        case '-':cout<<a-b;break;
        case '*':cout<<a*b;break;
        case '/':cout<<a/b;break;
        case '%':cout<<a%b;break;
    }
    return 0;
}