Submission #369108

#	Time	Username	Problem	Language	Result	Execution time	Memory
369108		Lam_lai_cuoc_doi	Art Exhibition (JOI18_art)	C++17	100 / 100	616 ms	21100 KiB

art

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;

const bool typetest = 0;
const int N = 5e5 + 5;
const ll Inf = 1e17;
int n;
struct OK
{
    ll x, y;
    bool operator<(const OK &a) const
    {
        return x < a.x;
    }
} a[N];

void Read()
{
    cin >> n;
    for (int i = 1; i <= n; ++i)
        cin >> a[i].x >> a[i].y;
    sort(a + 1, a + n + 1);
}

void Solve()
{
    a[0].y = 0;
    ll maxn(-Inf);
    ll ans(-Inf);
    for (int i = 1; i <= n; ++i)
    {
        a[i].y += a[i - 1].y;
        maxn = max(maxn, a[i].x - a[i - 1].y);
        ans = max(ans, maxn + a[i].y - a[i].x);
    }
    cout << ans;
}

int32_t main()
{
    //ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int t(1);
    if (typetest)
        cin >> t;
    for (int _ = 1; _ <= t; ++_)
    {
        Read();
        Solve();
    }
}

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