제출 #1140476

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1140476		vikofaz	Art Exhibition (JOI18_art)	C++20	0 / 100	1 ms	320 KiB

art

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
const int MAXN=5e5+5;
const ll inf=2e18;
int n;
pll pref[MAXN+1];
int main(){
    freopen("input","r",stdin);
    freopen("output","w",stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>pref[i].fi>>pref[i].se;
    }
    sort(pref+1,pref+n+1,[&](pll x,pll y){
        if(x.fi==y.fi){
            return x.se>y.se;
        }
        return x.fi<y.fi;
    });
    ll sum=0,ans=-inf,mn=0;
    for(int i=1;i<=n;i++){
        mn=min(mn,sum-pref[i].fi);
        sum+=pref[i].se;
        ans=max(ans,sum-pref[i].fi-mn);
    }
    cout<<ans;
}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp: In function 'int main()':
art.cpp:13:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     freopen("input","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
art.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen("output","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~

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