#include<stdio.h>
#include<math.h>
int main(){
	int a,b,c,d;
	while(scanf("%d%c%d",&a,&b,&c)!=EOF){
		if(b=='+'){
			d=a+c;
			printf("%d\n",d);
			printf("Since %d+%d=%d, the output should be %d.\n",a,c,d,d);
		}
		if(b=='-'){
		d=a-c;
		printf("%d\n",d);
		}
	}	
	return 0;
}