#include<stdio.h>
#include<string.h>
int main()
{
	long long a, b;
	char str;
	while (~scanf ("%lld %c %lld", &a, &str, &b)){
	if (str == '+')
		printf ("%lld\n", a + b);
	else
		printf ("%lld\n", a - b);}
	return 0;
}