Submission #680984

#	Time	Username	Problem	Language	Result	Execution time	Memory
680984		Alexandruabcde	Art Exhibition (JOI18_art)	C++14	100 / 100	317 ms	48264 KiB

art

#include <bits/stdc++.h>

using namespace std;

typedef pair <long long, int> PLLI;
typedef long long LL;
constexpr int NMAX = 5e5 + 5;
constexpr LL INF = 1LL * 1e18;

int N;

PLLI A[NMAX];
LL sp[NMAX];

void Read () {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    cin >> N;

    for (int i = 1; i <= N; ++ i )
        cin >> A[i].first >> A[i].second;

    sort(A+1, A+N+1);
}

void Solve () {
    for (int i = 1; i <= N; ++ i )
        sp[i] = sp[i-1] + 1LL * A[i].second;

    set <LL> S;
    LL ans = -INF;
    for (int i = 1; i <= N; ++ i ) {
        S.insert(sp[i-1] - A[i].first);

        LL value = *(S.begin());
        ans = max(ans, sp[i] - A[i].first - value);
    }

    cout << ans << '\n';
}

int main () {
    Read();
    Solve();

    return 0;
}

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