Submission #913861

#	Time	Username	Problem	Language	Result	Execution time	Memory
913861		cot	Art Exhibition (JOI18_art)	C++14	100 / 100	167 ms	16008 KiB

art

#include <iostream>
#include <array>
#include <algorithm>
#include <map>
#include <climits>
#define int long long
#define ff first
#define ss second
#define pb push_back
#define pp pop_back
#define all(x) x.begin(),x.end()
#define pii pair <int,int>
#define r0 return 0
using namespace std;
const int N = 5 * 1e5 + 5;
int x,m,k,n,l,r,ans,cheese;
int pref[N],p[N],mn;
pii a[N];
signed main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> a[i].ff >> a[i].ss;
    }
    sort(a + 1,a + 1 + n);
    p[0] = -a[1].ff;
    pref[0] = 0;
    for (int i = 1; i <= n; i++){
        pref[i] = pref[i - 1] + a[i].ss;
        p[i] = min(p[i - 1],pref[i] - a[i + 1].ff);
    }
    k = -LLONG_MAX;
    for (int i = 1; i <= n; i++) {
        k = max(k,pref[i] - a[i].ff - p[i - 1]);
    }
    cout << k << endl;
    r0;
}

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