Submission #1326597

#	Time	Username	Problem	Language	Result	Execution time	Memory
1326597		tuncay_pasha	Bank (IZhO14_bank)	C++20	27 / 100	1102 ms	157508 KiB

bank

/**
 * author:  tuncypasha
 * file:    c.cpp
 * created: 17.02.2026 22:58
**/
#include <bits/stdc++.h>
#include <bits/extc++.h>
#define pasha ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(v) begin(v), end(v)
using namespace std;
using namespace __gnu_pbds;

// mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

constexpr int N = 2e5 + 5, LG = 20, oo = 1e16;

set<int> v[N];

bool ok(int mask, int submask) {
  for (int i = LG - 1; i >= 0; --i) {
    if ((submask & (1LL << i)) && !(mask & (1LL << i)))
      return false;
  }
  return true;
}
void _() {
  int n, m;
  cin >> n >> m;
  vector<int> a(n + 1);
  for (int i = 1; i <= n; ++i)
    cin >> a[i];
  vector<int> b(m);
  for (int i = 0; i < m; ++i)
    cin >> b[i];
  vector<vector<int>> dp((1LL << m) + 5, vector<int>(n + 5, 0));
  vector<int> sum((1LL << m) + 5, 0);
  for (int mask = 0; mask < (1LL << m); ++mask) {
    int S = 0;
    for (int i = 0; i < m; ++i) {
      if (mask & (1LL << i))
        S += b[i];
    }
    sum[mask] = S, v[S].insert(mask);
  }
  dp[0][0] = 1;
  for (int i = 1; i <= n; ++i) {
    for (int mask = 0; mask < (1LL << m); ++mask) {
      for (auto &submask : v[a[i]]) {
        if (!ok(mask, submask))
          continue;
        int out = (mask ^ submask);
        dp[mask][i] = (dp[out][i - 1]);
        if (dp[out][i - 1])
          break;
      }
    }
    vector<int> del;
    for (auto &mask : v[a[i]]) {
      if (!dp[mask][i])
        del.pb(mask);
    }
    for (int &mask : del)
      v[a[i]].erase(mask);
  }
  for (int mask = 0; mask < (1LL << m); ++mask) {
    if (dp[mask][n])
      return cout << "YES" << '\n', void();
  }
  cout << "NO" << '\n', void();
}

signed main() {
  pasha
  int t = 1;
  // cin >> t;
  for (int cs = 1; cs <= t; ++cs) {
    _();  
    // cout << '\n';
  }
}

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