Submission #397626

#	Time	Username	Problem	Language	Result	Execution time	Memory
397626		huukhang	Bank (IZhO14_bank)	C++11	100 / 100	154 ms	8612 KiB

bank

/*
						   Khangnh's code

“You can either experience the pain of discipline or the pain of regret. 
						The choice is yours.”
*/

// - Only when necessary :d
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("avx,avx2,fma")

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;

#define fileopen(a, b) freopen(((string)a + ".inp").c_str(), "r", stdin); freopen(((string)b + ".out").c_str(), "w", stdout); 

#define ll long long
// #define int long long
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define pob pop_back
#define pof pop_front
typedef pair<int, int> pii;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

const ll mod = 1e9 + 7;
const ll inf = 1e9 + 7;
const double eps = 1e-9;

int n, m;
int a[20], b[20];
pii dp[1 << 20];

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[0] = {0, 0};
	for (int i = 1; i < (1 << m); ++i) {
		dp[i] = {0, 0};
		for (int j = 0; j < m; ++j) {
			if ((i >> j) & 1) {
				pii tmp = dp[i ^ (1 << j)];

				if (tmp.se + b[j] < a[tmp.fi]) tmp.se += b[j];
				else if (tmp.se + b[j] == a[tmp.fi]) ++tmp.fi, tmp.se = 0;

				dp[i] = max(dp[i], tmp);
			}
		}

		if (dp[i].first == n) {
			cout << "YES";
			return;
		}
	}

	cout << "NO";
}

signed main() {
	#ifdef khangorz
		fileopen("input", "output");
	#endif
	#ifndef khangorz
//		fileopen("LAH", "LAH");
	#endif
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	solve();
	return 0;
}

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