제출 #906646

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
906646		zhasyn	은행 (IZhO14_bank)	C++14	44 / 100	1025 ms	600 KiB

bank

#include <bits/stdc++.h>
#define pb push_back
#define pf push_front
using namespace std;
#define F first
#define S second
typedef long long ll;
#define pii pair <int, int>
#define pll pair <ll, ll>
typedef long double ld;
const ll N = 1e5 + 10;
const ll mod = 998244353;

ll um(ll a, ll b){
	return ((1LL * a * b) % mod + mod) % mod;
}
ll subr(ll a, ll b){
	return ((1LL * a - b) % mod + mod) % mod;
}
int a[N], b[N], n, m;
bool dp[N], base[N], nw[N];
void calc(int goal, int cur, int sum, int hs){
	if(sum == goal){
		dp[hs] = true;
		return;
	}
	if(cur == m) return;
	if(sum + b[cur] <= goal){
		calc(goal, cur + 1, sum + b[cur], hs + (1 << cur));
	}
	calc(goal, cur + 1, sum, hs);
}
void subtask1(){
	dp[0] = true;
  	for(int i = 0; i < m; i++){
  		for(int j = a[0]; j >= b[i]; j--){
  			dp[j] |= dp[j - b[i]];
  		}
  	}
  	if(dp[a[0]]) cout << "YES";
  	else cout << "NO";
}
void subtask2(){
	base[0] = 1;
  	for(int i = 0; i < n; i++){
  		calc(a[i], 0, 0, 0);
  		for(int j = 0; j < (1 << m); j++){
  			for(int mask = 0; mask < (1 << m); mask++){
  				if(!dp[j] || !base[mask]) continue;
  				if((mask ^ j) == (mask | j)){
  				//	cout << j << " "<< mask << endl;
  					nw[j | mask] = true;
  				}
  			}
  		}
  		for(int j = 0; j < (1 << m); j++){
  			base[j] = nw[j];
  			nw[j] = false;
  			dp[j] = false;
  		}
  	}
  	bool can = false;
  	for(int i = 0; i < (1 << m); i++){
  		if(base[i]) can = true;
  	}
  	if(can) cout << "YES\n";
  	else cout << "NO\n";
}
int main() {
	ios::sync_with_stdio(false);
  	cin.tie(NULL);
  	//freopen("bank.in", "r", stdin);
  	//freopen("bank.out", "w", stdout);
  	cin >> n >> m;
  	for(int i = 0; i < n; i++){
  		cin >> a[i];
  	}
  	for(int i = 0; i < m; i++){
  		cin >> b[i];
  	}
  	if(n == 1){
  		subtask1();
  	} else{
  		subtask2();
  	}
  return 0;
}

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