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답안 #140510

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
140510 2019-08-03T09:23:59 Z wasyl Snake Escaping (JOI18_snake_escaping) C++11
75 / 100
 2000 ms 25488 KB 
#pragma optimize("O3")
#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;
vector< int > ind;

int id(const char c)
{
    if (c == '?') return 2;
    return c - '0';
}

int rek(const int t, string& s, const int v, const int msk = 0)
{
    for (int j = v; j < ind.size(); ++j)
    {
        int i = ind[j];
        if (id(s[i]) == t)
        {
            int res = 0;
            if (t == 2)
            {
                s[i] = '0';
                res += rek(t, s, j + 1, msk);
                s[i] = '1';
                res += rek(t, s, j + 1, msk + (1 << i));
                s[i] = '?';
                return res;
            }
            if (t == 0)
            {
                s[i] = '?';
                res += rek(t, s, j + 1, msk + (1 << i));
                s[i] = '1';
                res -= rek(t, s, j + 1, msk);
                s[i] = '0';
                return res;
            }
            if (t == 1)
            {
                s[i] = '?';
                res += rek(t, s, j + 1, msk + (1 << i));
                s[i] = '0';
                res -= rek(t, s, j + 1, msk);
                s[i] = '1';
                return res;
            }

        }
    }
    return pre[t][msk]; //spo
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    cin >> l >> q;
    n = (1 << l);

    cin >> s;

    for (int i = 0; i < n; ++i)
        tab[i] = s[i] - '0';

    for (int i = 0; i < n; ++i)
        pre[0][i] = tab[(n - 1) - i];
    for (int i = 0; i < n; ++i)
        pre[1][i] = tab[i];
    for (int i = 0; i < n; ++i)
        pre[2][i] = tab[i];

    for (int i = 0; i < l; ++i)
        for (int j = 0; j < n; ++j)
            if ((1 << i) & j)
                pre[0][j] += pre[0][j - (1 << i)],
                pre[1][j] += pre[1][j - (1 << i)];

                for (int i = 0; i < q; ++i)
                {
                    string s; cin >> s;
                    reverse(begin(s), end(s));
                    int zl[2] = {0, 0};
                    for (char c : s)
                        if (c == '0' or c == '1')
                            ++zl[c - '0'];
                    if (zl[0] <= lax / 3)
                    {
                        ind.clear();
                        for (int i = 0; i < l; ++i)
                            if (s[i] == '0')
                                ind.push_back(i);
                        int msk = 0;
                        for (int i = 0; i < l; ++i)
                            if (s[i] == '?')
                                msk += (1 << i);
                        cout << rek(0, s, 0, msk) << '\n';
                    }
                    else if (zl[1] <= lax / 3)
                    {
                        ind.clear();
                        for (int i = 0; i < l; ++i)
                            if (s[i] == '1')
                                ind.push_back(i);
                        int msk = 0;
                        for (int i = 0; i < l; ++i)
                            if (s[i] == '?')
                                msk += (1 << i);
                        cout << rek(1, s, 0, msk) << '\n';
                    }
                    else if (l - zl[0] - zl[1] <= lax / 3)
                    {
                        ind.clear();
                        for (int i = 0; i < l; ++i)
                            if (s[i] == '?')
                                ind.push_back(i);
                        int msk = 0;
                        for (int i = 0; i < l; ++i)
                            if (s[i] == '1')
                                msk += (1 << i);
                        cout << rek(2, s, 0, msk) << '\n';
                    }
                }
}

Compilation message

snake_escaping.cpp:1:0: warning: ignoring #pragma optimize  [-Wunknown-pragmas]
 #pragma optimize("O3")
 
snake_escaping.cpp: In function 'int rek(int, std::__cxx11::string&, int, int)':
snake_escaping.cpp:19:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int j = v; j < ind.size(); ++j)
                     ~~^~~~~~~~~~~~
snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:80:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
             if ((1 << i) & j)
             ^~
snake_escaping.cpp:84:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
                 for (int i = 0; i < q; ++i)
                 ^~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 293 ms 5240 KB Output is correct
12 Correct 762 ms 4896 KB Output is correct
13 Correct 836 ms 4300 KB Output is correct
14 Correct 598 ms 3832 KB Output is correct
15 Correct 423 ms 4932 KB Output is correct
16 Correct 496 ms 4060 KB Output is correct
17 Correct 607 ms 3960 KB Output is correct
18 Correct 222 ms 5880 KB Output is correct
19 Correct 757 ms 2936 KB Output is correct
20 Correct 350 ms 4472 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 293 ms 5240 KB Output is correct
12 Correct 762 ms 4896 KB Output is correct
13 Correct 836 ms 4300 KB Output is correct
14 Correct 598 ms 3832 KB Output is correct
15 Correct 423 ms 4932 KB Output is correct
16 Correct 496 ms 4060 KB Output is correct
17 Correct 607 ms 3960 KB Output is correct
18 Correct 222 ms 5880 KB Output is correct
19 Correct 757 ms 2936 KB Output is correct
20 Correct 350 ms 4472 KB Output is correct
21 Correct 410 ms 4988 KB Output is correct
22 Correct 744 ms 5112 KB Output is correct
23 Correct 1382 ms 4148 KB Output is correct
24 Correct 923 ms 4048 KB Output is correct
25 Correct 538 ms 5984 KB Output is correct
26 Correct 718 ms 4544 KB Output is correct
27 Correct 783 ms 4752 KB Output is correct
28 Correct 243 ms 7032 KB Output is correct
29 Correct 1263 ms 3084 KB Output is correct
30 Correct 430 ms 5188 KB Output is correct
31 Correct 727 ms 5092 KB Output is correct
32 Correct 699 ms 4984 KB Output is correct
33 Correct 510 ms 3996 KB Output is correct
34 Correct 798 ms 3948 KB Output is correct
35 Correct 779 ms 4392 KB Output is correct
36 Correct 260 ms 2936 KB Output is correct
37 Correct 414 ms 4984 KB Output is correct
38 Correct 970 ms 3040 KB Output is correct
39 Correct 673 ms 4200 KB Output is correct
40 Correct 686 ms 4020 KB Output is correct

Subtask #4
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 81 ms 18968 KB Output is correct
12 Correct 87 ms 19232 KB Output is correct
13 Correct 114 ms 19096 KB Output is correct
14 Correct 159 ms 18972 KB Output is correct
15 Correct 96 ms 18892 KB Output is correct
16 Correct 156 ms 18588 KB Output is correct
17 Correct 137 ms 18456 KB Output is correct
18 Correct 68 ms 18712 KB Output is correct
19 Correct 83 ms 18456 KB Output is correct
20 Correct 82 ms 18584 KB Output is correct
21 Correct 114 ms 18584 KB Output is correct
22 Correct 152 ms 18456 KB Output is correct
23 Correct 91 ms 18456 KB Output is correct
24 Correct 156 ms 18456 KB Output is correct
25 Correct 139 ms 18584 KB Output is correct
26 Correct 69 ms 18388 KB Output is correct
27 Correct 83 ms 18588 KB Output is correct
28 Correct 95 ms 18456 KB Output is correct
29 Correct 122 ms 18540 KB Output is correct
30 Correct 175 ms 18596 KB Output is correct
31 Correct 102 ms 18544 KB Output is correct
32 Correct 152 ms 18584 KB Output is correct
33 Correct 136 ms 18460 KB Output is correct
34 Correct 68 ms 18388 KB Output is correct
35 Correct 121 ms 18532 KB Output is correct
36 Correct 120 ms 18536 KB Output is correct
37 Correct 118 ms 18428 KB Output is correct
38 Correct 122 ms 18504 KB Output is correct
39 Correct 118 ms 18456 KB Output is correct
40 Correct 130 ms 18428 KB Output is correct

Subtask #5
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 293 ms 5240 KB Output is correct
12 Correct 762 ms 4896 KB Output is correct
13 Correct 836 ms 4300 KB Output is correct
14 Correct 598 ms 3832 KB Output is correct
15 Correct 423 ms 4932 KB Output is correct
16 Correct 496 ms 4060 KB Output is correct
17 Correct 607 ms 3960 KB Output is correct
18 Correct 222 ms 5880 KB Output is correct
19 Correct 757 ms 2936 KB Output is correct
20 Correct 350 ms 4472 KB Output is correct
21 Correct 410 ms 4988 KB Output is correct
22 Correct 744 ms 5112 KB Output is correct
23 Correct 1382 ms 4148 KB Output is correct
24 Correct 923 ms 4048 KB Output is correct
25 Correct 538 ms 5984 KB Output is correct
26 Correct 718 ms 4544 KB Output is correct
27 Correct 783 ms 4752 KB Output is correct
28 Correct 243 ms 7032 KB Output is correct
29 Correct 1263 ms 3084 KB Output is correct
30 Correct 430 ms 5188 KB Output is correct
31 Correct 727 ms 5092 KB Output is correct
32 Correct 699 ms 4984 KB Output is correct
33 Correct 510 ms 3996 KB Output is correct
34 Correct 798 ms 3948 KB Output is correct
35 Correct 779 ms 4392 KB Output is correct
36 Correct 260 ms 2936 KB Output is correct
37 Correct 414 ms 4984 KB Output is correct
38 Correct 970 ms 3040 KB Output is correct
39 Correct 673 ms 4200 KB Output is correct
40 Correct 686 ms 4020 KB Output is correct
41 Correct 81 ms 18968 KB Output is correct
42 Correct 87 ms 19232 KB Output is correct
43 Correct 114 ms 19096 KB Output is correct
44 Correct 159 ms 18972 KB Output is correct
45 Correct 96 ms 18892 KB Output is correct
46 Correct 156 ms 18588 KB Output is correct
47 Correct 137 ms 18456 KB Output is correct
48 Correct 68 ms 18712 KB Output is correct
49 Correct 83 ms 18456 KB Output is correct
50 Correct 82 ms 18584 KB Output is correct
51 Correct 114 ms 18584 KB Output is correct
52 Correct 152 ms 18456 KB Output is correct
53 Correct 91 ms 18456 KB Output is correct
54 Correct 156 ms 18456 KB Output is correct
55 Correct 139 ms 18584 KB Output is correct
56 Correct 69 ms 18388 KB Output is correct
57 Correct 83 ms 18588 KB Output is correct
58 Correct 95 ms 18456 KB Output is correct
59 Correct 122 ms 18540 KB Output is correct
60 Correct 175 ms 18596 KB Output is correct
61 Correct 102 ms 18544 KB Output is correct
62 Correct 152 ms 18584 KB Output is correct
63 Correct 136 ms 18460 KB Output is correct
64 Correct 68 ms 18388 KB Output is correct
65 Correct 121 ms 18532 KB Output is correct
66 Correct 120 ms 18536 KB Output is correct
67 Correct 118 ms 18428 KB Output is correct
68 Correct 122 ms 18504 KB Output is correct
69 Correct 118 ms 18456 KB Output is correct
70 Correct 130 ms 18428 KB Output is correct
71 Correct 701 ms 22980 KB Output is correct
72 Correct 782 ms 23168 KB Output is correct
73 Correct 1226 ms 21656 KB Output is correct
74 Execution timed out 2072 ms 25488 KB Time limit exceeded
75 Halted 0 ms 0 KB -