제출 #140502

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
140502	2019-08-03 09:05:09	wasyl	Snake Escaping (JOI18_snake_escaping)	C++11	58 / 100	2045 ms	20432 KiB

snake_escaping

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#include <bits/stdc++.h>
using namespace std;
constexpr int lax = 20, qax = 1e6, nax = (1 << lax);
int l, q, n, tab[nax], pre[3][nax];
string s;
int id(const char c)
{
    if (c == '?') return 2;
    return c - '0';
}
int rek(const int t, string& s, const int v)
{
    for (int i = v; i < l; ++i)
        if (id(s[i]) == t)
        {
            int res = 0;
            if (t == 2)
            {
                s[i] = '0';
                res += rek(t, s, i + 1);
                s[i] = '1';
                res += rek(t, s, i + 1);
                s[i] = '?';
                return res;
            }
            if (t == 0)
 
 
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