Submission #1264107

#	Time	Username	Problem	Language	Result	Execution time	Memory
1264107		rtri	Kitchen (BOI19_kitchen)	C++20	0 / 100	1 ms	396 KiB

kitchen

#include <bits/stdc++.h>
using namespace std;

int cost = 0;
int n, m, k;
vector<int> meals, possible_chefs;

bool possible(vector<int> chefs) {
  for (int i = 0; i < n; i++) {
    sort(chefs.rbegin(), chefs.rend());
    if (meals[i] < k)
      return false;
    for (int j = 0; j < k; j++) {
      if (chefs[j] == 0)
        return false;
      chefs[j]--;
    }
  }

  return true;
}

int main() {
  cin >> n >> m >> k;

  meals.resize(n);
  for (int i = 0; i < n; i++) {
    cin >> meals[i];
    cost += meals[i];
  }
  possible_chefs.resize(m);
  for (int i = 0; i < m; i++)
    cin >> possible_chefs[i];

  int ans = 1e9;
  for (int mask = 1; mask <= (1 << m); mask++) {
    if (__builtin_popcount(mask) < k)
      continue;
    vector<int> chefs;
    int sum = 0;
    for (int i = 0; i < m; i++)
      if (1 & (mask >> i)) {
        chefs.push_back(possible_chefs[i]);
        sum += possible_chefs[i];
      }
    if (cost <= sum && possible(chefs))
      ans = min(ans, sum - cost);
  }

  if (ans == 1e9)
    cout << "impossible" << endl;
  else
    cout << ans << endl;

  return 0;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 22
• Subtask 3: 0 / 20
• Subtask 4: 0 / 21
• Subtask 5: 0 / 28