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