func_code_string: #include <bits/stdc++.h>   using namespace std;   int helper(long long int edges, long long int nodes) {     if (edges == nodes - 1) return nodes - 1;     edges -= nodes - 1;     return nodes - 1 - ceil((1.0 + sqrt(1.0 + 8.0 * edges)) / 2.0);   }   int main() {     ios::sync_with_stdio(false);     ;     cin.tie(0);     ;     long long int i, j, q, n, lo, mid, hi;     cin >> q;     while (q--) {       cin >> n;       lo = n - 1;       hi = (n * (n - 1)) / 2 + 1;       while (hi - lo > 1) {         mid = (lo + hi) / 2;         if (helper(mid, n) >= (mid + 1) / 2)           lo = mid;         else           hi = mid;       }       cout << lo <<   n ;     }     return 0;   }   