제출 #1128558

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1128558		Alihan_8	Snake Escaping (JOI18_snake_escaping)	C++20	22 / 100	152 ms	12720 KiB

snake_escaping

#include <bits/stdc++.h>

using namespace std;

signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	
	int n, q; cin >> n >> q;
	
	string s; cin >> s;
	
	for ( auto &v: s ) v -= '0';
	
	vector <int> pw(n + 1, 1);
	
	for ( int i = 1; i <= n; i++ ){
		pw[i] = pw[i - 1] * 3;
	}
	
	vector <int> dp(pw[n]);
	
	for ( int mask = 0; mask < pw[n]; mask++ ){
		bool has_q = false;
	
		for ( int i = 0; i < n; i++ ){
			int b = mask / pw[i] % 3;
			
			if ( b == 2 ){
				has_q = true;
				dp[mask] = dp[mask - pw[i]] + dp[mask - pw[i] * 2];
				
				break;
			}
		}
		
		if ( !has_q ){
			int x = 0;
			
			for ( int i = 0; i < n; i++ ){
				int b = mask / pw[i] % 3;
				
				x = x * 2 + b;
			}
			
			dp[mask] = s[x];
		}
	}
	
	while ( q-- ){
		string t; cin >> t;
		
		int x = 0;
		
		for ( int i = 0; i < n; i++ ){
			x = x + pw[i] * (t[i] == '?' ? 2 : t[i] - '0');
		}
		
		cout << dp[x] << '\n';
	}
}

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 0 / 53
• Subtask 5: 0 / 25