func_code_string: // Murabito-B 21/04/13   #include <bits/stdc++.h>   using namespace std;   using ll = long long;   void solve() {       int a, b, c;       cin >> a >> b >> c;       for (int i = 0; i <= a - c; ++i) cout << 1;       for (int i = 1; i < c; ++i) cout << 0;       cout <<   1 ;       for (int i = 1; i < b; ++i) cout << 0;       cout <<   n ;   }   int main() {       ios_base::sync_with_stdio(false), cin.tie(0);       int _;       for (cin >> _; _--;) solve();       return 0;   }