Submission #550765

#	Time	Username	Problem	Language	Result	Execution time	Memory
550765		Karnis_052	Bank (IZhO14_bank)	C++17	100 / 100	724 ms	180976 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[22][(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];
	for (int i = 0; i < n; i++)cin >> a[i];
	for (int i = 0; i < m; i++)
	{
		cin >> b[i];
	}
	for (int i = 0; i <= 21; i++)
		for (int j = 0; j <= (1 << N); j++) dp[i][j] = -1;
	dp[0][0] = 0;
	for (int i = 0; i < n; i++)
	{
		for (int mask = 0; mask < (1 << m); mask++)
		{
			if (dp[i][mask] == -1) continue;
			for (int k = 0; k < m; k++)
				if (((mask >> k) & 1) == 0)
					dp[i][mask | (1 << k)] = dp[i][mask] + b[k];
		}
		for (int mask = 0; mask < (1 << m); mask++)
		{
			if (dp[i][mask] == a[i]) dp[i + 1][mask] = 0;
		}

	}
	bool f1 = 0;
	for (int mask = 0; mask < (1 << m); mask++)
		if (dp[n][mask] == 0) f1 = 1;
	if (f1)
		cout << "YES" << endl;
	else cout << "NO" << endl;

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

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