#include <iostream>
using namespace std;

void FastIO(){
  
     ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0);
    freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
};

 
int main(){
     FastIO();  
     int a,b;
     char ch;
     cin>>a>>ch>>b;
     switch(ch)
     {
      case '+':
      cout<<a+b;
      break;
      case '-':
      cout<<a-b;
      break;
      case '*':
      cout<<a*b;
      break;
      case '/':
      cout<<a/b;
      break;
     }
return 0;   
}