Submission #1083843

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083843		mmdrzada	Bank (IZhO14_bank)	C++17	71 / 100	1060 ms	16872 KiB

bank

#include <bits/stdc++.h>
 
using namespace std;
 
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef long long ll;
 
#define sep ' '
#define F first
#define S second
#define fastIO 	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pb push_back
#define kill(x) {cout << x << endl;return;}
const int N = 21;
const ll LLINF = 2e18;
const int INF = INT_MAX/2;
int n, m;
int a[N], b[N];
int dp_prev[1<<N], dp[1<<N];
// check MAXN
// diffrence between extract and erase in multi set
 
void set_io() {
	fastIO;
	// freopen("guard.in", "r", stdin);
	// freopen("guard.out", "w", stdout);
}

void solve() {
	cin >> n >> m;
	for(int i = 0 ; i < n ; i ++) cin >> a[i];
	for(int i = 0 ; i < m ; i ++) cin >> b[i];
	
	dp_prev[0] = 0;
	for (int mask = 1 ; mask < 1<<m ; mask++)
		dp_prev[mask] = b[int(log2(mask))] + dp_prev[mask^(1<<int(log2(mask)))];
	
	for(int i = 0 ; i < n ; i ++) {
		memset(dp, -1, sizeof dp);
		for (int mask = 1 ; mask < 1<<m ; mask++) {
			for(int j = 0 ; j < m ; j ++) {
				if ((mask>>j)&1) {
					int x = mask ^  (1<<j);
					if (dp[x] != -1) {
						dp[mask] = dp[x] + b[j];
						j = m;
						continue;
					}
					if (dp_prev[x] >= 0 && dp_prev[x] + b[j] == a[i])
						dp[mask] = 0;
				}
			}
		}
		swap(dp, dp_prev);
	}
	if (dp_prev[(1<<m)-1] != -1) cout << "YES" << endl;
	else cout << "NO" << endl;
}
 
int main() {
	set_io();
	solve();
	return 0;
}

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