
#include <iostream>

using namespace std;

int main()
{
  int a,b;
 char op ;
 cin>>a;
 
 cin>> op;
 
 cin>>b;
 
 
 if (op == '+')
 cout<< a+b<<"\n";
else if (op == '-' )
 cout<<a-b<<"\n";
 else
 
 return 0;