제출 #1109235

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1109235		vjudge1	Art Exhibition (JOI18_art)	C++17	100 / 100	138 ms	8280 KiB

art

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double lb;
typedef pair<int,int> pi;
typedef unsigned long long ull;
typedef pair<ll,int> pli;
#define endl '\n'
#define all(v) (v).begin(),(v).end()
const int maxN=5e5;
const ll Inf=1e15;
pli Picture[maxN+1];

int main()
{
    cin.tie(0)->sync_with_stdio(0);
    cout.tie(0)->sync_with_stdio(0);
    #define Taskname "Ltest"
    if (fopen(Taskname".INP","r")) {
        freopen(Taskname".INP","r",stdin);
        freopen(Taskname".OUT","w",stdout);
    }
    int N;
    cin>>N;
    for (int i=1;i<=N;++i) cin>>Picture[i].first>>Picture[i].second;
    sort(Picture+1,Picture+N+1);
    ll Res=-Inf,Sum=0,Mn=Inf;
    for (int i=1;i<=N;++i) {
        Mn=min(Mn,Sum-Picture[i].first);
        Sum+=Picture[i].second;
        Res=max(Res,Sum-Picture[i].first-Mn);
    }
    cout<<Res;
}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp: In function 'int main()':
art.cpp:20:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen(Taskname".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
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(Taskname".OUT","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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