Submission #1158720

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158720		Hakuna	Snake Escaping (JOI18_snake_escaping)	C++20	12 / 100	2096 ms	7932 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> mp;
    while (Q--) {
        string d;
        cin >> d;
        if (mp.count(d)) cout << mp[d] << '\n';
        else {
            int res = 0;
            for (int i = 0; i < (1 << l); i++) {
                bool check = 1;
                for (int j = 0; j < d.size(); j++) {
                    if (d[d.size() - j - 1] == '?') continue;
                    if (d[d.size() - j - 1] - '0' != ((i >> j) & 1)) {
                        check = 0;
                        break;
                    }
                }
                if (check) res += s[i] - '0';
            }
            
            cout << (mp[d] = res) << '\n';
        }
    }

    return 0;
}

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