DSA01001.cpp

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        string s;
        cin>>s;
        int i=s.size()-1;
        while(i>0 and (s[i]-'0')!=0)
        {
            s[i] = '0';
            i--;
        }
        if(i>0)
            s[i]='1';

        cout<<s<<endl;

    }
}