제출 #681183

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
681183		sudheerays123	은행 (IZhO14_bank)	C++17	100 / 100	392 ms	180684 KiB

bank

#include<bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define ll int
const ll N = 21 , INF = 1e18 , MOD = 1e9+7;

ll dp[N][(1ll<<N)];
map<ll,vector<ll>> maskpossible;
vector<ll> a(N);
ll n,m;

ll go(ll i , ll mask){

	if(i == n+1) return 1;
	if(dp[i][mask] != -1) return dp[i][mask];

	vector<ll> possible = maskpossible[a[i]];

	for(auto u : possible){
		if(mask&u) continue;
		if(go(i+1,mask|u)) return dp[i][mask] = 1;
	}

	return dp[i][mask] = 0;
}

void solve(){

	cin >> n >> m;
	for(ll i = 1; i <= n; i++) cin >> a[i];

	vector<ll> b(m+5);
	for(ll i = 1; i <= m; i++) cin >> b[i];

	for(ll i = 1; i < (1ll<<m); i++){
		ll sum = 0;
		for(ll j = 0; j < m; j++) if(i&(1ll<<j)) sum += b[j+1];
		maskpossible[sum].push_back(i);
	}

	memset(dp,-1,sizeof dp);

	if(go(1,0)) cout << "YES";
	else cout << "NO";
}

int main(){

	fast;

	ll tc = 1;
	// cin >> tc;
	while(tc--) solve();

	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp:5:25: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
    5 | const ll N = 21 , INF = 1e18 , MOD = 1e9+7;
      |                         ^~~~

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