제출 #1207578

#제출 시각아이디문제언어결과실행 시간메모리
1207578cheat_when_I_was_youngHack (APIO25_hack)C++17
25 / 100
1084 ms16452 KiB
#include "hack.h" #include "bits/stdc++.h" using namespace std; int hack() { vector<long long> a; for (int i = 1; i <= 1000000; ++i) a.emplace_back(i); long long res = collisions(a); for (int n = 1; n <= 1000000; ++n) { int q = 1000000 / n; int r = 1000000 % n; long long val = (long long)q * (q - 1) / 2 * n + (long long)q * r; if (val == res) return n; } return -1; }
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