#include <stdio.h>
int aaa2(int a, char c, int b)
{
int n;
switch (c)
{
case '+' :
n=a+b;
break;
case '-' :
n=a-b;
break;
case '*' :
n=a*b;
break;
case '/' :
n=a/b;
break;
case '%' :
n=a%b;
break;
default:
n=a+b;
}
return n;
}
int main(void)
{
int a, b;
int n;
char c;
scanf("%d %c %d", &a, &c, &b);
printf("%d", aaa2(a, c, b));
return 0;
}
int aaa2(int a, char c, int b)
{
int n;
switch (c)
{
case '+' :
n=a+b;
break;
case '-' :
n=a-b;
break;
case '*' :
n=a*b;
break;
case '/' :
n=a/b;
break;
case '%' :
n=a%b;
break;
default:
n=a+b;
}
return n;
}
int main(void)
{
int a, b;
int n;
char c;
scanf("%d %c %d", &a, &c, &b);
printf("%d", aaa2(a, c, b));
return 0;
}