
#include <iostream>

using namespace std;

int main()
{
  int a,b;
 char op ;
 cout<<"enter a";
 cin>>a;
 cout<<"enter b";
 cin>>b; 
 cout<< "enter op";
 cin>> op;
 
 if (op == '+')
 cout<< a+b<<"\n";

 else 
 cout<<a-b<<"\n";
 
 
 
 
 
    
    
}