#include <iostream>

int main(){
	using namespace std;	
	
	long long n = 0;
	cin>>n;
	
	bool sign = true;
	
	if(n<0){sign = false;n = -n;}
	
	char number[11] = "\0";
	

	
	if(!(n%10)){
		while(!(n%10)){
			n = n/10;
		}
	}
	
	for(int i = 0;n;i++){
		number[i] = n%10 + 48;
		n = n/10;
	}
	
	if(!sign){
		cout<<"-"<<number;
	}else{
		cout<<number;
	}
	
	return 0;
	
}