Submission #1204605

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204605		LucaLucaM	Kitchen (BOI19_kitchen)	C++20	100 / 100	7 ms	584 KiB

kitchen

#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>

using ll = long long;
#define debug(x) #x << " = " << x << '\n'

const int MAX = 300;
const int INF = 1e9;

int dp[MAX * MAX + 1];

int main() {
  #ifdef LOCAL
    freopen("input.txt", "r", stdin);
  #endif

  int n, m, k;
  std::cin >> n >> m >> k;

  int sumA = 0;
  for (int i = 0; i < n; i++) {
    int x;
    std::cin >> x;
    if (x < k) {
      std::cout << "Impossible";
      return 0;
    }
    sumA += x;
  }

  dp[0] = 0;

  for (int s = 1; s <= MAX * MAX; s++) {
    dp[s] = -INF;
  }

  int sum = 0;

  for (int i = 0; i < m; i++) {
    int x;
    std::cin >> x;
    sum += x;
    for (int s = sum; s >= x; s--) {
      dp[s] = std::max(dp[s], dp[s - x] + std::min(n, x));
    }
  }
  int answer = -1;
  for (int s = sumA; s <= sum; s++) {
    if (dp[s] >= n * k) {
      answer = s;
      break;
    }
  }
  
  if (answer == -1) {
    std::cout << "Impossible";
  } else {
    answer -= sumA;
    std::cout << answer;
  }
  
  return 0;
}

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