Submission #1158769

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158769		Hakuna	Snake Escaping (JOI18_snake_escaping)	C++20	12 / 100	2092 ms	131072 KiB

snake_escaping

#include <bits/stdc++.h>
using namespace std;

int l, Q;
string s;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    
    cin >> l >> Q;
    cin >> s;
    
    unordered_map<string, int> cnt;
    for (int i = 0; i < (1 << l); i++) {
        string f;
        for (int j = l - 1; j >= 0; j--) {
            f += ((i >> j) & 1) + '0';
        }
        
        for (int mask = 0; mask < (1 << l); mask++) {
            string temp = f;
            for (int j = 0; j < l; j++) {
                if ((mask >> j) & 1) temp[j] = '?'; 
            }
            cnt[temp] += s[i] - '0';
        }
    }
    
    while (Q--) {
        string d;
        cin >> d;
        cout << cnt[d] << '\n';
    }

    return 0;
}

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