제출 #1087033

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1087033		quangminh412	Art Exhibition (JOI18_art)	C++14	50 / 100	1034 ms	20868 KiB

art

#include <bits/stdc++.h>
using namespace std;

/*
  John Watson
  https://codeforces.com/profile/quangminh98

  Mua Code nhu mua Florentino !!
*/

#define faster() ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define ll long long

const ll oo = 1e18;
const int maxn = 5e5 + 9;

int n;
pair<ll, ll> a[maxn];

signed main()
{
	if (fopen("test.inp", "r"))
	{
		freopen("test.inp", "r", stdin);
		freopen("test.out", "w", stdout);
	}
	faster();

	cin >> n;
	for (int i = 1; i <= n; i++) cin >> a[i].first >> a[i].second; 
	// first: size
	// second: value
	sort(a + 1, a + n + 1);
	
	ll ans = -oo;
	for (int i = 1; i <= n; i++)
	{
		ll mn = a[i].first, mx = a[i].first;
		ll s = 0;
		for (int j = i; j >= 0; j--)
		{
			mn = a[j].first;
			s += a[j].second;
			ans = max(ans, s - (mx - mn));
		}
	}
	cout << ans << '\n';

	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp: In function 'int main()':
art.cpp:24:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |   freopen("test.inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:25:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   freopen("test.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 50