Submission #976757

#	Time	Username	Problem	Language	Result	Execution time	Memory
976757		SeenSiravit	Art Exhibition (JOI18_art)	C++14	100 / 100	145 ms	25016 KiB

art

#include<bits/stdc++.h>
#define ll long long

using namespace std;

struct PAINT
{
    ll sz;
    ll val;

    bool operator < (const PAINT &d2) const{
        return sz < d2.sz;
    }
};

const int mxN = 5e5 + 5;

int n;
PAINT p[mxN];
ll sum[mxN];

int main(){
    ios::sync_with_stdio(0),cin.tie(0);

    cin>> n;

    for(int i=1;i<=n;i++) cin>> p[i].sz >> p[i].val;

    sort(p+1 , p+1+n);

    for(int i=1;i<=n;i++) sum[i] = p[i].val + sum[i-1];

    ll subtract = LLONG_MAX;
    ll ans = 0;

    for(int i=1;i<=n;i++){
        subtract = min(subtract , sum[i-1] - p[i].sz);

        ans = max(ans , sum[i]-p[i].sz - subtract);
    }

    cout<< ans;

    return 0;
}

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