제출 #1106762

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1106762		vjudge1	Art Exhibition (JOI18_art)	C++17	100 / 100	137 ms	8848 KiB

art

#include<bits/stdc++.h>
#define forinc(i,a,b) for(int i=a;i<=b;i++)
#define fordec(i,a,b) for(int i=a;i>=b;i--)
#define int long long
#define pii pair<int,int>
#define fi first
#define se second
#define pb push_back
using namespace std;
const int N = 1e6+10;
int n,sum[N];
pii a[N];

int32_t main()
{
    #define task "task"
    if(fopen(task".inp","r"))
    {
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n;
    forinc(i,1,n) cin>>a[i].fi>>a[i].se;
    sort(a+1,a+n+1);
    int kq = a[1].se;
    int s = a[1].se;
    int mx = a[1].fi;
    forinc(i,2,n)
    {
        mx = max(mx , a[i].fi - s);
        kq = max(kq , s + a[i].se - a[i].fi + mx);
        s += a[i].se;
    }
    cout<<kq;


}

컴파일 시 표준 에러 (stderr) 메시지

art.cpp: In function 'int32_t main()':
art.cpp:19:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
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(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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