Submission #483980

#	Time	Username	Problem	Language	Result	Execution time	Memory
483980		BERNARB01	A Difficult(y) Choice (BOI21_books)	C++17	0 / 100	3 ms	200 KiB

books

#include <bits/stdc++.h>
#include "books.h"

using namespace std;

const int N = (int) 1e5 + 9;

int n, k, s;
long long a[N], lo, hi;

void solve(int nn, int K, long long A, int S) {
  lo = A;
  hi = 2 * A;
  n = nn; k = K; s = S;
  for (int i = 0; i < n; i++) {
    a[i] = skim(i + 1);
    if (a[i] >= lo) {
      n = i + 1;
      break;
    }
  }
  map<long long, int> id;
  for (int i = 0; i < n; i++) {
    id[a[i]] = i;
  }
  for (int i = 0; i < n; i++) {
    set<long long> se;
    for (int j = n - 1; j > i; j--) {
      long long sum = a[i] - a[j];
      auto it = se.lower_bound(lo - sum);
      if (it == se.end()) {
        continue;
      }
      if (sum + *it <= hi) {
        answer({i + 1, j + 1, id[*it] + 1});
      }
      se.insert(a[j]);
    }
  }
  impossible();
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20