Submission #1131534

#	Time	Username	Problem	Language	Result	Execution time	Memory
1131534		micro7	Bank (IZhO14_bank)	C++20	71 / 100	1093 ms	6576 KiB

bank

#include <iostream>
#include <vector>
using namespace std;

constexpr int MAXN = 20, MAXM = 20;
int n, m, a[MAXN + 1], b[MAXM];
bool dp[MAXN + 1][1 << MAXM];

vector<int> configs[1001];

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  cin >> n >> m;
  for (int i = 1; i <= n; ++i) {
    cin >> a[i];
  }
  for (int i = 0; i < m; ++i) {
    cin >> b[i];
  }

  for (int s = 0; s < (1 << m); ++s) {
    int val = 0;
    for (int i = 0; i < m; ++i) {
      if (s & (1 << i)) {
        val += b[i];
      }
    }
    if (val <= 1000) {
      configs[val].push_back(s);
    }
  }

  dp[0][0] = true;
  for (int i = 1; i <= n; ++i) {
    for (int s = 0; s < (1 << m); ++s) {
      for (auto j : configs[a[i]]) {
        if ((s & j) != j) {
          continue;
        }
        if (dp[i - 1][s ^ j]) {
          dp[i][s] = true;
          break;
        }
      }
      if (i == n && dp[i][s]) {
        cout << "YES";
        return 0;
      }
    }
    cout << '\n';
  }
  cout << "NO";

  return 0;
}

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 0 / 29