#include <stdio.h>

int main() {
	int n1, n2, ans;
	char op;
	scanf("%d %c %d", &n1, &op, &n2);
	switch (op) {
	case '+':
		ans = n1 + n2;
		break;
	case '-':
		ans = n1 - n2;
		break;
	case '*':
		ans = n1 * n2;
		break;
	case '/':
		if (n2) {
			ans = n1 / n2;
			break;
		}
	default:
		fprintf(stderr, "Invalid Input\n");
		return 1;
	}
	printf("%d", ans);
	return 0;
}