Submission #466688

#	Time	Username	Problem	Language	Result	Execution time	Memory
466688		Em1L	Fountain (eJOI20_fountain)	C++14	30 / 100	1565 ms	3120 KiB

fountain

#include <bits/stdc++.h>

using namespace std;

void fastIO() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); }

int main()
{
    fastIO();
    
    int n, q, vol, pos;
    
    cin >> n >> q;
    
    vector < pair <int, int> > v(n);
    
    vector < int > pour(n);
    
    for (int i = 0; i < n; i++) cin >> v[i].first >> v[i].second;
    
    for (int i = 0; i < n; i++)
        for (int j = i; j <= n; j++)
        {
            if (j == n)
            {
                pour[i] = -1;
                
                break;
            }
            
            pour[i] = j;
            
            if (v[i].first < v[j].first) break;
        }
    
    for (int i = 0; i < q; i++)
    {
        cin >> pos >> vol; pos--;
        
        while (pos != -1)
        {
            vol -= v[pos].second;
            
            if (vol <= 0) break;
            
            pos = pour[pos];
        }
        
        cout << pos + 1 << '\n';
    }
}

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