Submission #1018295

#	Time	Username	Problem	Language	Result	Execution time	Memory
1018295		codexistent	Art Exhibition (JOI18_art)	C++14	100 / 100	383 ms	32604 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define MAXN 500005
#define FOR(i, a, b) for(ll i = a; i <= b; i++)
#define f first
#define s second

ll n, mnp[MAXN], sp[MAXN], vp[MAXN], r = 0;
pair<ll, ll> w[MAXN];

int main(){
    cin >> n;
    FOR(i, 1, n) cin >> w[i].f >> w[i].s;
    sort(w + 1, w + 1 + n);

    vp[0] = 0, sp[0] = LLONG_MIN;
    FOR(i, 1, n){
        vp[i] = vp[i - 1] + w[i].s;
        mnp[i] = - vp[i - 1] + w[i].f;
        sp[i] = max(sp[i - 1], mnp[i]);

        r = max(r, vp[i] - w[i].f + sp[i]);
    }

    cout << r << endl;
}

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