Submission #550541

#	Time	Username	Problem	Language	Result	Execution time	Memory
550541		Kipras	Art Exhibition (JOI18_art)	C++17	100 / 100	641 ms	52296 KiB

art

#include <bits/stdc++.h>

typedef long long ll;

using namespace std;

const ll maxN = 5e5+10;

vector<pair<ll, ll>> a;
map<ll, ll> b;
ll n;

int main()
{

    ios_base::sync_with_stdio(0);cin.tie(nullptr);

    cin>>n;

    ll mx = 0;

    for(int i = 0; i < n; i++){
        ll aa, bb;
        cin>>aa>>bb;
        a.push_back({aa, bb});
        mx=max(mx, bb);
    }


    for(int i = 0; i < n; i++){
        b[a[i].first]+=a[i].second;
    }

    a.clear();

    for(auto i : b){
        a.push_back({i.first, i.second});
    }

    sort(a.begin(), a.end());

    n = a.size();

    for(int i = 0; i < n; i++){
        mx=max(mx, a[i].second);
    }

    ll cur = a[0].second;

    for(int i = 1; i < n; i++){

        cur = max(cur+a[i].second-abs(a[i].first-a[i-1].first), a[i].second);

        mx=max(mx, cur);

    }

    cout<<mx;

    return 0;
}

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