Submission #857264

#	Time	Username	Problem	Language	Result	Execution time	Memory
857264		annabeth9680	Art Exhibition (JOI18_art)	C++17	100 / 100	188 ms	24904 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;
    sort(arr.begin(),arr.end());
    vector<int> pref(N); pref[0] = arr[0].s;
    for(int i = 1;i<N;++i) pref[i] = pref[i-1]+arr[i].s;
    int ans = -1, mincur = -arr[0].f;
    for(int i = 1;i<N;++i){
        int cur = pref[i-1]-arr[i].f;
        mincur = min(mincur,cur);
        ans = max(ans,cur+arr[i].s-mincur);
        //cout << ans << " " << mincur << " " << cur << "\n";
    }
    cout << ans << "\n";
    return 0;
}

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