Submission #550760

#	Time	Username	Problem	Language	Result	Execution time	Memory
550760		Karnis_052	Bank (IZhO14_bank)	C++17	0 / 100	64 ms	34052 KiB

bank

// Bismillahir Rahmanir Rahim
#include<bits/stdc++.h>
using namespace std;
typedef long long int  ll;
typedef pair<int, int>PI;
typedef pair<ll, ll > PL;
typedef vector<int>VI;
typedef vector<ll>VL;
#define FF first
#define SS second
const int mod = 1e9 + 7;
const int INF = 1e9;
const int N = 20;
ll dp[(1 << N) + 5];
int main()
{
	ios::sync_with_stdio(false);   cin.tie(0); cout.tie(0);
	freopen("bank.in", "r", stdin);
	freopen("bank.out", "w", stdout);
	int n, m;
	cin >> n >> m;
	int a[n], b[m];
	multiset<int, greater<int>>st;
	for (int i = 0; i < n; i++)cin >> a[i];
	for (int i = 0; i < m; i++)
	{
		cin >> b[i];
		st.insert(b[i]);
	}
	sort(b, b + m); reverse(b, b + m);

	dp[0] = 1;
	for (int mask = 0; mask < (1 << n); mask++)
	{
		if (!dp[mask]) continue;
		for (int i = 0; i < n; i++)
		{
			if ((mask >> i) & 1)continue;
			int sum = a[i];
			for (int j = 0; j < m; j++)
			{
				if (sum >= b[j]) sum -= b[j], b[j] = 0;

			}
			if (sum == 0)
				dp[mask | (1 << i)] = 1;
		}
	}
	if (dp[(1 << n) - 1])
		cout << "YES" << endl;
	else cout << "NO" << endl;

	cerr << "time taken : " << (float)clock() / CLOCKS_PER_SEC << " secs" << endl;
	return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:18:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  freopen("bank.in", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:19:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  freopen("bank.out", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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