Submission #632639

#	Time	Username	Problem	Language	Result	Execution time	Memory
632639		ac2hu	Art Exhibition (JOI18_art)	C++14	100 / 100	190 ms	12660 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define int long long 
signed main() {
    iostream::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);
    int N, sum = 0;cin >> N;
    vector<pair<int,int>> A(N);for(auto &e : A)cin >> e.first >> e.second;
    sort(A.begin(), A.end());
    vector<int> suf(N);
    suf[N - 1] = A[N - 1].first;
    for(int i = N - 2;i>=0;i--){
        sum += A[i + 1].second;
        suf[i] = A[i].first + sum;
        suf[i] = min(suf[i], suf[i + 1]);
    }
    sum += A[0].second;
    int pref = 0;
    int ans = 0;
    for(int i = 0;i<N;i++){
        ans = max(ans, sum - pref - suf[i] + A[i].first);
        pref += A[i].second;
    }
    cout << ans << "\n";
}

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