제출 #1287124

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1287124		red_souls	Gym Badges (NOI22_gymbadges)	C++20	100 / 100	145 ms	10432 KiB

Main

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

const int N = 5e5 + 16;
int n;
pair <ll, ll> a[N];

namespace sub4 {

    bool cmp(pair <ll, ll> a, pair <ll, ll> b) {
        return a.first + a.second < b.first + b.second;
    }

    priority_queue <int> pq;
    int result;

    void solve() {
        sort(a + 1, a + 1 + n, cmp);
        ll sum = 0;
        for (int i = 1; i <= n; i++) {
            if (sum <= a[i].second) {
                sum += a[i].first;
                result++;
                pq.push(a[i].first);
            }
            else {
                sum += a[i].first;
                pq.push(a[i].first);
                sum -= pq.top();
                pq.pop();
            }
        }
        cout << result;
    }
}

int main() {
    ios_base :: sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    if (fopen(task".inp", "r")) {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }

    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> a[i].first;
    }
    for (int i = 1; i <= n; i++) {
        cin >> a[i].second;
    }
    sub4 :: solve();

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:45:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:46:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 9 / 9
• Subtask 3: 27 / 27
• Subtask 4: 49 / 49