$\color{#1fdb91}{\texttt{C}}\color{#0aaec9}{\texttt{+}}\color{#e9418e}{\texttt{+}}$

#include <iostream>
#include <algorithm>
#include <cstring>

#define all(v) v.begin(), v.end()
#define del0 while (s[s.size()-1] == '0' && s.size()>1) s.pop_back();

using namespace std;

int main() {

    string s; cin >> s;
    del0;
    
    reverse(all(s));
    del0;
    
    cout << s;
  
}

$\\$
\begin{array}{c|c|c}\color{#ffd710}{\texttt{\{}} \color{#8655d6}{\texttt{\{}}\ \ \color{#8cdcda}{\text{Daoanhviet96}}\ \ \color{#8655d6}{\texttt{\}}} \color{#ffd710}{\texttt{\}}}\end{array}

#include <bits/stdc++.h>

using namespace std;
string s;
void xuli()
{
    while (s[s.size() - 1] == '0' && s.size() > 1)
    {
        s.pop_back();
    }
}

int main()
{
    cin >> s;
    xuli();
    reverse(s.begin(), s.end());
    xuli();
    cout << s;
}