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