func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n0, n1, n2;       cin >> n0 >> n1 >> n2;       if (n1 == 0 && n2 == 0) {         cout << string(n0 + 1,  0 ) << endl;         continue;       }       string result = string(n2 + 1,  1 );       char turn =  0 ;       while (n1--) {         result += turn;         if (turn ==  0 ) {           turn =  1 ;         } else {           turn =  0 ;         }       }       if (result[result.size() - 1] ==  0 ) {         result += string(n0,  0 );       } else {         result = result.substr(0, result.size() - 1);         result = result + string(n0,  0 ) +  1 ;       }       cout << result << endl;     }     return 0;   }   