Submission #234289

#	Time	Username	Problem	Language	Result	Execution time	Memory
234289		Toirov_Sadi	Art Exhibition (JOI18_art)	C++17	0 / 100	5 ms	384 KiB

art

#include<bits/stdc++.h>

using namespace std;

int n;
vector<long long> p;
vector<pair<long long, int>> a;
int main()
{
    cin >> n;
    for(int i = 1; i <= n; i ++){
        int y;
        long long x;
        cin >> x >> y;
        a.push_back({x, y});
    }
    sort(a.begin(), a.end());

    p.resize(n, 0ll);
    for(int i = 0; i < n; i ++){
        if(i > 0) p[i] = p[i - 1];
        p[i] += a[i].second;
    }

    long long mx = 0ll;
    for(int i = 0; i < n; i ++){
        int l = 0, r = i;
        while(l < r){
            int m = (l + r) / 2;
            long long sum = p[i];
            if(m > 0) sum -= p[m - 1];
            if(sum - (a[i].first - a[m].first) >= a[i].second){
                r = m;
            }
            else{
                l = m + 1;
            }
        }
        long long sum = p[i];
        if(l > 0) sum -= p[l - 1];

        mx = max(mx, sum - (a[i].first - a[l].first));
    }
    cout << mx << "\n";
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50