Submission #864825

#	Time	Username	Problem	Language	Result	Execution time	Memory
864825		dpsaveslives	Art Exhibition (JOI18_art)	C++17	100 / 100	162 ms	24908 KiB

art

#include <bits/stdc++.h>
#define int long long
#define f first
#define s second
using namespace std;
int32_t main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int N; cin >> N;
    vector<pair<int,int>> arr(N);
    for(int i = 0;i<N;++i) cin >> arr[i].f >> arr[i].s; //size, value
    sort(arr.begin(),arr.end());
    vector<int> pref(N+1); pref[0] = 0;
    for(int i = 1;i<=N;++i){
        pref[i] = pref[i-1]+arr[i-1].s;
    }
    int cur = pref[0]-arr[0].f, ans = 0;
    for(int i = 1;i<N;++i){
        int x = pref[i]-arr[i].f;
        cur = min(cur,x);
        ans = max(ans,x-cur+arr[i].s);
        //cout << cur << " " << x << "\n";
    }
    cout << ans << "\n";
    return 0;
}

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