func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     string s;     cin >> s;     int a = 0, b = 0;     int i, j;     int n = s.size();     for (i = 1; i < n; ++i) {       if (s[i] ==  b  && s[i - 1] ==  a ) {         ++a;       }       if (s[i] ==  a  && s[i - 1] ==  b ) {         ++b;       }     }     if (a != b) {       if (s[0] ==  a )         s[0] =  b ;       else         s[0] =  a ;     }     cout << s <<   n ;   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int test_case = 1;     cin >> test_case;     while (test_case-- > 0) solve();     return 0;   }   