제출 #1150479

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1150479		nguyn	Art Exhibition (JOI18_art)	C++20	100 / 100	112 ms	12176 KiB

art

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

#define int long long
#define ll long long 
#define F first
#define S second
#define pb push_back 
#define pii pair<int,int>

const int N = 5e5 + 5;

int n; 
pii a[N]; 
int p[N];

signed main(){
    ios_base::sync_with_stdio(false) ; 
    cin.tie(0) ; cout.tie(0) ; 
    if (fopen("INP.INP" ,"r")) {
        freopen("INP.INP" ,"r" , stdin) ;
        freopen("OUT.OUT" , "w" , stdout) ;
    }
    cin >> n; 
    for (int i = 1; i <= n; i++) {
    	cin >> a[i].F >> a[i].S; 
    }
    sort(a + 1, a + 1 + n); 
    for (int i = 1; i <= n; i++) {
    	p[i] = p[i - 1] + a[i].S; 
    }
    int mn = p[0] - a[1].F; 
    int res = 0; 
    for (int i = 1; i <= n; i++) {
    	res = max(res, p[i] - a[i].F - mn); 
    	mn = min(mn, p[i] - a[i + 1].F); 
    }
    cout << res;
}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp: In function 'int main()':
art.cpp:21:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen("INP.INP" ,"r" , stdin) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen("OUT.OUT" , "w" , stdout) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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