#include <iostream>
using namespace std;
int main( )
{
int a,b;char c;
cin>>a>>b;
cin>>c;
switch(c)
{
case '+':cout<<a+b;break;
case '-':cout<<a-b;break;
case '*':cout<<a*b;break;
case '/':if(b==0)cout<<"Divided by zero!";else cout<<a/b;break;
default:cout<<"Invalid operator!";
}
}

#include <iostream>
#include <cstdio>
using namespace std;
int main() {
    int a, b;
    char op;
    cin >> a >> b >> op;
    switch (op) {
        case '+':
            cout << a + b;
            break;
        case '-':
            cout << a - b;
            break;
        case '*':
            cout << a * b;
            break;
        case '/':
            if (b == 0) {
                cout << "Divided by zero!";
            } else {
                cout << a / b;
            }
            break;
        default:
            cout << "Invalid operator!";
    }
    return 0;
}