제출 #1251797

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1251797		tranvinhhuy2010	선물 (IOI25_souvenirs)	C++20	4 / 100	12 ms	412 KiB

souvenirs

#include "souvenirs.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, known, cnt[105] = {};
ll p[105] = {};

int adu_build(ll money) {
    auto [v, remain] = transaction(money);
    ll sum = money - remain;

    for (int i : v)
        cnt[i]++;

    while (v[0]<known) {
        while (v.back()>=known) {
            sum -= p[v.back()];
            v.pop_back();
        }

        if (v[0]+1==known) break;
        adu_build((sum-1)/v.size());
    }

    p[v[0]] = sum;
    return v[0];
}

void adu_complete() {
    for (int i=1; i<n; i++) {
        while (cnt[i]<i) {
            transaction(p[i]);
            cnt[i]++;
        }
    }
}

void buy_souvenirs(int N, ll P0) {
    n = known = N;
    p[0] = P0;
    adu_build(P0-1);
    adu_complete();
}

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