Submission #1276704

#	Time	Username	Problem	Language	Result	Execution time	Memory
1276704		coderg300711	Art Exhibition (JOI18_art)	C++20	100 / 100	122 ms	8260 KiB

art

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const ll INF=1e18+27092008;
const int N=5e5+5;

template<class T>
    bool maximize(T &a, const T &b) {
        if (a < b) return a = b, 1;
        return 0;
}

int n;
pair<ll,ll> a[N];

void init(){
    cin>>n;
    for(int i=1;i<=n;i++) cin >> a[i].first >> a[i].second;
}

void solve(){
    init();
    sort(a+1,a+n+1);
    ll best = -INF, ans = -INF;
    for(int i=1;i<=n;i++) {
        a[i].second += a[i-1].second;
        maximize(best, -a[i-1].second+a[i].first);
        maximize(ans,a[i].second-a[i].first+best);
    }
    cout<<ans;
}

signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0); cout.tie(0);

    solve();

    return 0;
}

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