#include <iostream>
#include <windows.h>
#include <conio.h>

using namespace std;

int f,e;
char d;

kalk (int a, char b, int c)
{
cin >> a;
cin >> b;
cin >> c;
system ("cls");
switch (b)
{
case '*':
cout << a * c;
break;

case '/':
cout << a / c;
break;

case '+':
cout << a + c;
break;

case '-':
cout << a - c;
break;
}
}

int main()
{
kalk (f,d,e);

getch();
}