Submission #1221064

#	Time	Username	Problem	Language	Result	Execution time	Memory
1221064		SpyrosAliv	Hack (APIO25_hack)	C++20	25 / 100	967 ms	16452 KiB

hack

#include "hack.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long

const int MX = 1e6;

int hack() {
    vector<ll> willAsk;
    for (int i = 1; i <= MX; i++) willAsk.push_back(i);
    ll tot = collisions(willAsk);
    for (int i = 1; i <= MX; i++) {
        ll range = MX / i - 1;
        ll willDo = i * range * (range + 1) / 2 + (range + 1) * (MX % i);
        if (willDo == tot) return i;
    }
    assert(false);
}

• Subtask 0: 0 / 0
• Subtask 1: 8 / 8
• Subtask 2: 17 / 17
• Subtask 3: 0 / 75