Submission #1269186

#	Time	Username	Problem	Language	Result	Execution time	Memory
1269186		limits	Bank (IZhO14_bank)	C++20	71 / 100	1073 ms	2152 KiB

bank

#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3,unroll-loops")

#include <bits/stdc++.h>

using namespace std;

#define f0r(i, n) for (auto i = 0; i < (n); ++i)
#define fnr(i, n, k) for (auto i = (n); i < (k); ++i)
#define all(v) (v).begin(), (v).end()
#define pb push_back
#define F first
#define S second
#define ctn(x) cout << x << '\n'
#define forl(a, l) for (auto a : l)
#define ctl(l) for (auto &a : (l)) cout << a << ' '; cout << endl;
#define lb(v, x) (lower_bound(all(v), x) - begin(v))
#define ub(v, x) (upper_bound(all(v), x) - begin(v))
#define pq priority_queue

template <class T>
using V = vector<T>;
using ll = long long;
using vi = V<int>;
using vl = V<ll>;
using pi = pair<int, int>;
using ti = tuple<int, int, int>;
using Adj = V<vi>;
using vvi = V<vi>;

const int N = 20;
bool dp[N+5][1<<N];
vi make[1005];
int sal[N+5], notes[N+5];

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	int n, m;
	cin >> n >> m;
	f0r(i, n) cin >> sal[i];
	sort(sal, sal + n);
	f0r(i, m) cin >> notes[i];

	fnr(s, 1, 1 << m) {
		int sm = 0;
		f0r(j, m) if (s & (1 << j)) sm += notes[j];
		if (binary_search(sal, sal + n, sm)) make[sm].pb(s);
	}

	if (n == 1) {
		if (make[sal[0]].size()) ctn("YES");
		else ctn("NO");
		return 0;
	}

	dp[0][0] = 1;
	fnr(i, 1, n+1) {
		fnr(s, 1, 1 << m) {
			if (dp[i][s]) break;
			forl(x, make[sal[i-1]]) {
				if ((s & x) == x) dp[i][s] |= dp[i-1][s ^ x];
			}
		}
	}
	fnr(s, 1, 1 << m) {
		if (dp[n][s]) {
			ctn("YES");
			return 0;
		}
	}
	ctn("NO");
}

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