제출 #1279365

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1279365		ducanh0811	Art Exhibition (JOI18_art)	C++20	100 / 100	138 ms	8260 KiB

art

#include <bits/stdc++.h>
#define int long long
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define REV(i, a, b) for (int i = (a), _b = (b); i >= _b; --i)
using namespace std;

#define MAXN 500005
pair<int, int> a[MAXN];
int n;

void solve(){
    cin >> n;
    FOR(i, 1, n){
        cin >> a[i].first >> a[i].second;
    }
    sort(a + 1, a + 1 + n);
    int sum = 0;
    int mi = -1e18;
    int res = 0;
    FOR(i, 1, n) {
        mi = max(mi, -sum + a[i].first);
        sum += a[i].second;
        res = max(res, sum - a[i].first + mi);
    }
    cout << res;
}

#define task ""
int32_t main(){
    if (fopen(task".inp","r")){
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    solve();
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp: In function 'int32_t main()':
art.cpp:31:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
art.cpp:32:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 50 / 50