>>74
#include <stdio.h>
int main()
{
int r = 0, x, y;
char op;
if (scanf("%d%d %c", &x, &y, &op) != 3)
return 1;
switch (op)
{
case '+': r = x + y; break;
case '-': r = x - y; break;
case '*': r = x * y; break;
case '/': r = x / y; break;
}
printf("%d\n", r);
return 0;
}