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B.cpp
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B.cpp
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#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define loop(i,a,b) for(ll i=a;i<b;i++)
#define testcases ll t;cin>>t;while(t--)
#define pb push_back
#define all(x) x.begin(), x.end()
#define dec(x) greater<x>()
int main()
{
#ifndef ONLINE_JUDGE
freopen("C:/Users/91731/Documents/input.txt","r",stdin);
freopen("C:/Users/91731/Documents/output.txt","w",stdout);
freopen("C:/Users/91731/Documents/error.txt","w",stderr);
#endif
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
testcases
{
string p;
cin>>p;
ll n=p.length();
ll one=0,zero=0;
loop(i,0,n)
{
if(p[i]=='1')one++;
else zero++;
}
if(one==n || zero==n)
cout<<p<<endl;
else
{
loop(i,0,n)
cout<<"01";
cout<<endl;
}
}
}