#include <iostream>


using namespace std;


int main()
{
int a, b;
char c;
cin>>a;
cin>>b;
cin>>c;
if (c=='+'){
        cout<<a+b<<endl;
}
else if (c=='-'){
        cout<<a-b<<endl;
}
else if (c=='*'){
    cout<<a*b<<endl;
}
else if (c=='/'){
        cout<<a/b<<endl;
}
    return 0;
}