Submission #936681

#	Time	Username	Problem	Language	Result	Execution time	Memory
936681		Regulus	Art Exhibition (JOI18_art)	C++17	100 / 100	155 ms	18284 KiB

art

#include <bits/stdc++.h>
#define IO ios::sync_with_stdio(false);cin.tie(0);
#define debug(x) cerr << #x << " = " << (x) << ' '
#define bug(x) cerr << (x) << ' '
#define endl cerr << '\n'
#define all(v) (v).begin(), (v).end()
#define SZ(v) (ll)(v).size()
#define lowbit(x) (x)&-(x)
#define pb emplace_back
#define F first
#define S second
using namespace std;
using ll = long long;
using pll = pair<ll, ll>;
//#define TEST
const int N = 5e5+5;
pll a[N];

int main(void)
{ IO
    int n, i;

    cin >> n;
    for (i=1; i <= n; ++i) cin >> a[i].F >> a[i].S;

    ll ans = 0, sum = 0, mx = -2e18;
    sort(a+1, a+n+1);
    for (i=1; i <= n; ++i)
    {
        mx = max(mx, -sum + a[i].F);
        sum += a[i].S;
        ans = max(ans, sum + mx - a[i].F);
    }

    cout << ans << '\n';


    return 0;
}

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