using namespace std;
int main(){
	int a,b,flag=1;
	cin >> a;
	if(a > 0){
		while(a != 0){
			b=a % 10;
			a=a / 10;
			if(b != 0){
				flag = 0;
			}
			if(b == 0 and flag == 0){
				cout << b;
			}
			else if(b!=0){
				cout << b;
			}
			else{
				continue;
			}
		}
	}
	else if(a == 0){
		cout << 0;
	}
	else{
		a = 0 - a;
		cout << "-";
		while(a != 0){
			b=a % 10;
			a=a / 10;
			if(b != 0){
				flag = 0;
			}
			if(b == 0 and flag == 0){
				cout << b;
			}
			else if(b != 0){
				cout << b;
			}
			else{
				continue;
			}
		}
	}
}