using namespace std;
int main(){
	long long a,b;
	char sy;
	long long c;
	cin>>a>>sy>>b;
	if(sy=='+'){
		c=a+b;
	}
	else if(sy=='-'){
		c=a-b;
	}
	else if(sy=='*'){
		c=a*b;
	}
	else if(sy=='/'){
		c=a/b;
	}
	else if(sy=='%'){
		c=a%b;
	}
	cout<<c;
	return 0;
}