func_code_string: #include <bits/stdc++.h>   #pragma GCC optimize( O3 )   using namespace std;   template <class c>   struct rge {     c b, e;   };   template <class c>   rge<c> range(c i, c j) {     return rge<c>{i, j};   }   template <class c>   auto dud(c* x) -> decltype(cerr << *x, 0);   template <class c>   char dud(...);   struct debug {     template <class c>     debug& operator<<(const c&) {       return *this;     }   };   long long n, p;   int32_t main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     long long te;     cin >> te;     while (te--) {       cin >> n >> p;       vector<pair<long long, long long> > ans;       for (long long i = 1; i <= n; i++) {         for (long long j = i + 1; j <= n; j++) {           ans.push_back({i, j});         }       }       for (long long i = 0; i < 2 * n + p; i++)         cout << ans[i].first <<     << ans[i].second <<   n ;     }     return 0;   }   