Submission #975282

#	Time	Username	Problem	Language	Result	Execution time	Memory
975282		v_matei	Bank (IZhO14_bank)	C++17	100 / 100	106 ms	8792 KiB

bank

#include <bits/stdc++.h>
#include <unordered_map>
#include <vector>

#define ll long long
#define ull unsigned long long
#define pii std::pair<int, int>

#define IO (std::string) ""
std::ifstream fin(IO + ".in");
std::ofstream fout(IO + ".out");

#define NMAX 21

int n, m;
int a[NMAX], b[NMAX];

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

int main() {
  citire();

  std::vector<int> curr(1 << m, -1), l(1 << m, -1);
  curr[0] = l[0] = 0;
  for (int mask = 0; mask < (1 << m); mask++) {
    for (int j = 0; j < m; j++) {
      if (!(mask & (1 << j)))
        continue;
      int prev = mask ^ (1 << j);
      if (curr[prev] == -1)
        continue;
      int aux = l[prev] + b[j];

      if (aux < a[curr[prev]]) {
        curr[mask] = curr[prev];
        l[mask] = aux;
      } else 
        if (aux == a[curr[prev]]) {
          curr[mask] = curr[prev] + 1;
          l[mask] = 0;
        }
      
    }

    if (curr[mask] == n) {
      std::cout << "YES";
      return 0;
    }
  }
  std::cout << "NO";
  return 0;
}

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