func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(false);     int q;     cin >> q;     while (q--) {       int n;       cin >> n;       long long l = 0, r = n + 1;       while (r - l > 1) {         long long k = (l + r) >> 1;         if ((long long)(n - k) * (n - k - 1) >= 2LL * k)           l = k;         else           r = k;       }       long long ans = 2 * l;       for (int i = l + 1;            i < n && (long long)i + (long long)(n - i) * (n - i - 1) / 2 > ans;            i++)         ans = (long long)i + (long long)(n - i) * (n - i - 1) / 2;       cout << ans << endl;     }     return 0;   }   