제출 #1234811

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1234811		Jer	Art Exhibition (JOI18_art)	C++20	100 / 100	119 ms	12092 KiB

art

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

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

#define ff first
#define ss second

int main()
{
    scanf("%d", &n);

    ll f, s;
    for (int i = 0; i < n; i++)
        scanf("%lld%lld", &f, &s), a[i] = {f, s};

    sort(a, a + n);

    for (int i = 0; i < n; i++)
        pre[i] = (i == 0) ? a[i].ss : a[i].ss + pre[i - 1];

    ll res = 0, sum = 0, m = 0;

    for (int i = 0; i < n; i++)
    {
        sum += a[i].ss;
        m = min(m, sum - a[i].ff - a[i].ss);
        res = max(res, sum - m - a[i].ff);
    }

    printf("%lld\n", res);

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp: In function 'int main()':
art.cpp:17:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
art.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         scanf("%lld%lld", &f, &s), a[i] = {f, s};
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~

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