#include
int main()
{
int a, b;
char op;
scanf ("%d%d %c", &a, &b, &op);
if (op == '+'){printf ("%d\n", a+b);}
else if (op == '-'){printf ("%d\n", a-b);}
else if (op == '*'){printf ("%d\n", a*b);}
else if (op == '/'){printf ("%d\n", a/b);}
return 0;
}