Submission #463449

#	Time	Username	Problem	Language	Result	Execution time	Memory
463449		Em1L	Fountain (eJOI20_fountain)	C++14	30 / 100	1094 ms	524292 KiB

fountain

#include <bits/stdc++.h>
using namespace std;
 
int main()
{
    int n, q, x, y;
    
    cin >> n >> q;
    
    vector < vector <int> > cnt;
    
    vector < pair <int, int> > v;
    
    for (int i = 0; i < n; i++)
    {
        cin >> x >> y;
        
        v.push_back({ x, y });
    }
    
    for (int i = 0; i < n; i++)
    {
        int prev = i;
        
        cnt.push_back(vector <int>());
        
        cnt[i].push_back(i);
        
        for (int j = i; j < n; j++)
            if (v[prev].first < v[j].first)
            {
                cnt[i].push_back(j);
                
                prev = j;
            }
    }
    
    for (int i = 0; i < q; i++)
    {
        cin >> x >> y;
        
        for (int i = 0; i < n; i++)
        {
            if (i > 0 and cnt[x - 1][i] == 0) break;
            
            y -= v[cnt[x - 1][i]].second;
            
            if (y <= 0)
            {
                cout << cnt[x - 1][i] + 1 << '\n';
                
                break;
            }
        }
        
        if (y > 0) cout << 0 << '\n';
    }
}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40