Submission #153357

#	Time	Username	Problem	Language	Result	Execution time	Memory
153357		Vladden	Bank (IZhO14_bank)	C++14	100 / 100	497 ms	15480 KiB

bank

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define po(x) (1<<x)
#define schnell ios_base::sync_with_stdio(NULL); cin.tie(NULL); cout.tie(NULL)
#define forn(i,n) for(ll i = 1;i<=n;i++)
typedef long long ll;
typedef long double ld;
#define DIM 25
#define DIM2 DIM*150
#define MODULO 998244353 
#define MAXN 1000000
#define MS 302
#define BigNumSize 250
#define AddLimit 151
const ll INF = 10E16;
const ll mask = po(9) - 1;
const ll base = 100000000000;
const ld eps = 0.0000001;
const ll masksz = 1048576;
struct pp {
	ll fi, sc;
	bool const operator < (const pp& b) {
		if (fi == b.fi)return sc < b.sc;
		return fi < b.fi;
	}
	bool const operator > (const pp& b) {
		if (fi == b.fi)return sc > b.sc;
		return fi > b.fi;
	}
	bool const operator == (const pp& b) {
		if (fi == b.fi && sc == b.sc)return 1;
		return 0;
	}
};
bool const operator<(const pp& a, const pp& b) {
	if (a.fi == b.fi)return a.sc < b.sc;
	return a.fi < b.fi;
}
ll n, m, A[DIM], B[DIM], flag = 0;
bool D[DIM][1048579];
vector<ll> G[DIM];
void dfs(ll x, ll mask) {
	if (x == n) {
		flag = 1;
		return;
	}
	if (D[x][mask])return;
	D[x][mask] = 1;
	for (ll to : G[x+1]) {
		if ((to & mask) == 0)dfs(x + 1, to ^ mask);
	}
}
int main() {
	schnell;
	cin >> n >> m;
	forn(i, n)cin >> A[i];
	forn(i, m)cin >> B[i];
	for (ll i = 0; i < (1 << m); i++) {
		ll r=0,mask = i,pos = 1;
		while (mask > 0) {
			if (mask&1)r += B[pos];
			pos++;
			mask /= 2;
		}
		for (ll j = 1; j <= n; j++) {
			if (A[j] == r)G[j].pb(i);
		}
	}
	dfs(0,0);
	if (flag == 1) {
		cout << "YES\n";
	}
	else {
		cout << "NO\n";
	}
	return 0;
}

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