Submission #1092821

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092821		vjudge1	Art Exhibition (JOI18_art)	C++17	100 / 100	127 ms	24780 KiB

art

#include<bits/stdc++.h>
#define int long long
#define fi first
#define se second
#define pb push_back
#define ii pair<int, int>
#define sz(v) (int)v.size()
#define all(v) v.begin(), v.end()
using namespace std;
 
const int N=1e5+5, mod = 1e9+7, inf = 1e18;
 
signed main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n; cin >> n;
    ii a[n+1]; for (int i=1; i<=n; i++) cin >> a[i].fi >> a[i].se;
    sort(a+1, a+n+1);
    int p[n+1]; p[0] = 0; for (int i=1; i<=n; i++) p[i] = p[i-1] + a[i].se;
    int mx = -inf;
    int ans = -inf;
    for (int i=n; i>=1; i--) {
        mx = max(mx, p[i]-a[i].fi);
        ans = max(ans, mx-p[i-1]+a[i].fi);
    }
    cout << ans;
}

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