#include<iostream>
using namespace std;
int main() {
    int n1, n2;
    char op;
    cin>>n1>>op>>n2;
    swtich(op) {
        case '+': cout<<n1+n2<<endl;break;
        case '-': cout<<n1-n2<<endl;break;
        case '*':cout<<n1*n2<<endl;break;
        case '/': cout<<n1/n2<<endl;break;
    }
}