Submission #576402

#	Time	Username	Problem	Language	Result	Execution time	Memory
576402		emad234	Fountain (eJOI20_fountain)	C++17	30 / 100	1581 ms	1348 KiB

fountain

#include <bits/stdc++.h>
#define all(v) ((v).begin(),(v).end())
typedef long long ll;
using namespace std;
const int mod = 1e9 + 7;
const int mxN = 2e6 + 1;
pair<int,int> a[mxN];
int main()
{
  ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  int n,q;
  cin >>n>>q;
  for(int i = 0;i < n;i++){
    cin >>a[i].first>>a[i].second;
  }
  a[n].first = INT_MAX;a[n].second = INT_MAX;
  while(q--){
      int r,v;
      cin >>r>>v;
      int prev = a[r - 1].first - 1;
      for(int i = r - 1;i <= n;i++){
        if(a[i].first > prev){
          prev = a[i].first;
          v -= a[i].second;
        }
        if(v <= 0){
          if(i == n)
            cout<<0<<'\n';
          else
            cout <<i + 1<<'\n';
          break;
        }
      }
  }
}

































//                                                                  nice

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