제출 #1263064

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1263064		sohamsen15	쌀 창고 (IOI11_ricehub)	C++20	100 / 100	15 ms	2376 KiB

ricehub

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

int besthub(int n, int maxCoordinate, int aArr[], ll budget) {
    vector<ll> a(n + 1); for (ll i = 1; i <= n; i++) a[i] = aArr[i - 1];
    vector<ll> p(n + 1); p[0] = 0; for (ll i = 1; i <= n; i++) p[i] = a[i] + p[i - 1];
    int ans = 0;

    for (int l = 1; l <= n; l++) {
        int low = l, high = n;

        function<bool(int)> possible = [&](int r) {
            ll m = l + (r - l) / 2;
            ll cost = a[m] * (2 * m + 1 - l - r) + (p[r] + p[l - 1] - 2 * p[m]);
            return cost <= budget;
        };

        while (low <= high) {
            int mid = (low + high) / 2;
            if (possible(mid)) ans = max(ans, mid - l + 1), low = mid + 1;
            else high = mid - 1;
        }
    }

    return ans;
}

• Subtask 1: 17 / 17
• Subtask 2: 25 / 25
• Subtask 3: 26 / 26
• Subtask 4: 32 / 32