代码:

#include<bits/stdc++.h>
#define int long long
using namespace std;
//const int N= ;
signed main(){
//	freopen("test.in","r",stdin);
//	freopen("test.out","w",stdout);
	string s;
	cin>>s;
	if(s[0]=='-'){
		reverse(s.begin()+1,s.end());
		cout<<'-';
		int id=0;
		while(s[id++]=='0'){
		}
		for(int i=id+1;i<s.size();i++)cout<<s[i];
	}else{ 
		int id=-1;
		reverse(s.begin(),s.end());
		while(s[id++]=='0'){
		}
		for(int i=id;i<s.size();i++)cout<<s[i];
	}
	return 0;
}