#include <stdio.h>
#include <stdlib.h>

int main(void) {
	int a,b,r=0;char op;
	scanf("%d",&a);
	scanf("%s",&op);
	scanf("%d",&b);
	switch (op){
	case 43: r= a+b;printf("%d",r);break;
	case 45: r=a-b;printf("%d",r);break;
	case 42: r=a*b;printf("%d",r);break;
	case 47: if (b != 0){
		r=a%b;printf("%d",r);break;
	}else{
		printf("ERROR: Division by zero is not allowed!");
	}break;
	case '%': if (b != 0){
		r=a%b;printf("%d",r);break;
	}else{
		printf("ERROR: Division by zero is not allowed!");break;
	}break;
	default: printf("ERROR: Unsupported Operator!");
	}
	return 0;
}