Submission #1204615

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204615		LucaLucaM	Kitchen (BOI19_kitchen)	C++20	100 / 100	2 ms	584 KiB

kitchen

#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
#pragma GCC optimize("O3","unroll-loops")
#pragma GCC target("avx")

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() {
  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;
    int me = x < n? x : n;
    for (int s = sum; s >= x; s--) {
      dp[s] = dp[s] < dp[s - x] + me? dp[s - x] + me : dp[s];
    }
  }
  for (int s = sumA; s <= sum; s++) {
    if (dp[s] >= n * k) {
      std::cout << s - sumA;
      return 0;
    }
  }
  
  std::cout << "Impossible";
  
  return 0;
}

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