제출 #734041

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
734041		MilosMilutinovic	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	100 / 100	728 ms	157456 KiB

brunhilda

/**
 *    author:  wxhtzdy
 *    created: 01.05.2023 15:53:44
**/
#include <bits/stdc++.h>
 
using namespace std;
 
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);  
  int n, q;
  cin >> n >> q;
  vector<int> p(n);
  for (int i = 0; i < n; i++) {
    cin >> p[i];
  }           
  const int MAX = 2e7 + 5;
  vector<int> mn(MAX, MAX);
  for (int i = 0; i < n; i++) {
    for (int k = 0; p[i] * (k + 1) < MAX; k++) {
      mn[(k + 1) * p[i] - 1] = min(mn[(k + 1) * p[i] - 1], k * p[i]);
    }
  }
  for (int i = MAX - 1; i > 0; i--) {
    mn[i - 1] = min(mn[i - 1], mn[i]);
  }
  vector<int> ans(MAX);
  for (int i = 1; i < MAX; i++) {
    if (mn[i] == i || mn[i] == MAX) {
      ans[i] = MAX;
    } else {
      ans[i] = ans[mn[i]] + 1;
    }
  }
  while (q--) {
    int x;
    cin >> x;     
    if (ans[x] >= MAX) {
      cout << "oo" << '\n';     
    } else {
      cout << ans[x] << '\n';
    }
  }                                                          
  return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 60 / 60