Submission #590792

#	Time	Username	Problem	Language	Result	Execution time	Memory
590792		Mazaalai	Bank (IZhO14_bank)	C++17	100 / 100	95 ms	4428 KiB

bank

#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops,fast-math,bits")
// #pragma GCC target("avx2")
#define ff first
#define ss second
using namespace std;
using sint = short int;
using PII = pair <sint, sint>;
 
signed main() {
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	sint n, m; cin >> n >> m;
	sint a[n], b[m];
	PII dp[1<<m];
	for (sint i = 0; i < n; i++) cin >> a[i];
	for (sint i = 0; i < m; i++) cin >> b[i];
	sort(a, a+n);
	sort(b, b+m);
	dp[0] = {0, 0};
	bool done = 0;
	for (int i = 1; i < (1<<m) && !done; i++) {
		dp[i] = {0, 0};
		for (sint j = 0; j < m; j++) {
			if (!(i & (1<<j)) || dp[i].ff > dp[i^(1<<j)].ff) continue;
			PII& tmp = dp[i^(1<<j)];
			if (tmp.ff > dp[i].ff) dp[i] = tmp;
			if (a[tmp.ff] >= b[j]+tmp.ss && dp[i].ss < b[j]+tmp.ss) dp[i].ss = b[j]+tmp.ss;
		}
		if (dp[i].ss == a[dp[i].ff]) dp[i] = {dp[i].ff+1, 0};
		done |= dp[i].ff == n;
	}
	cout << (done ? "YES" : "NO") << "\n";
}

Compilation message (stderr)

bank.cpp:2:51: warning: bad option '-fbits' to pragma 'optimize' [-Wpragmas]
    2 | #pragma GCC optimize("unroll-loops,fast-math,bits")
      |                                                   ^
bank.cpp:10:13: warning: bad option '-fbits' to attribute 'optimize' [-Wattributes]
   10 | signed main() {
      |             ^

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