Submission #535242

#	Time	Username	Problem	Language	Result	Execution time	Memory
535242		MKutayBozkurt	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	100 / 100	560 ms	157508 KiB

brunhilda

#include <bits/stdc++.h>
using namespace std;
 
const int mx = 2e7 + 5;
int bst[mx] = {}, dp[mx];
 
int main() {
  ios_base::sync_with_stdio(0); cin.tie(0); 
  int n, q; cin >> n >> q; 
  int A[n];
  for (int i = 0; i < n; i++) {
    cin >> A[i];
    for (int mul = A[i] - 1; mul < mx; mul += A[i]) bst[mul] = max(bst[mul], A[i] - 1);
  }
  for (int i = mx - 2; i; i--) bst[i] = max(bst[i], bst[i + 1] - 1);

  fill(dp, dp + mx, 1e9); dp[0] = 0; 
  for (int i = 1; i < mx; i++) dp[i] = dp[i - bst[i]] + 1;
  
  while (q--) {
    int x; cin >> x;
    cout << (dp[x] >= 1e9 ? "oo" : to_string(dp[x])) << '\n';
  }
}

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