Submission #635522

#	Time	Username	Problem	Language	Result	Execution time	Memory
635522		Ronin13	Art Exhibition (JOI18_art)	C++14	100 / 100	538 ms	24752 KiB

art

#include <bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
#define ull unsigned ll
using namespace std;

int main(){
    int n; cin >> n;
    pll a[n + 1];
    for(int i= 1; i <= n; i++) cin >> a[i].f >> a[i].s;
    sort(a + 1, a + 1 + n);
    ll pref[n + 1];
    pref[0] = 0;
    for(int i = 1; i <= n; i++) pref[i] = pref[i - 1] + a[i].s;
    ll mx = 0;
    ll ans = 0;
    for(int i = 1; i <= n; i++){
        mx = max(mx, a[i].f - pref[i - 1]);
        ans = max(ans, pref[i] - a[i].f + mx);
    }
    cout << ans;
    return 0;
}

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