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