oj.uz

Submission #1106005

# Submission time Handle Problem Language Result Execution time Memory
1106005 2024-10-28T17:48:20 Z 0x34c Snake Escaping (JOI18_snake_escaping) C++17
22 / 100
 560 ms 65536 KB 
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define endl '\n'

using namespace std;

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int L, Q;
    cin >> L >> Q;

    string s;
    cin >> s;

    // in bm0, 1 = ?; in bm1, 0 = ?
    int prv = 0, cur = 1;
    vector<vector<int>> bm0(1 << L, vector<int>(2)), bm1(1 << L, vector<int>(2));
    vector<int> val(1 << L, 0);
    for (int i = 0; i < s.size(); i++)
    {
        val[i] = s[i] - '0';
        bm0[i][prv] = bm1[i][prv] = val[i];
    }

    for (int j = 1; j <= L; j++)
    {
        for (int i = 0; i < (1 << L); i++)
        {
            if (i & (1 << (j - 1)))
            {
                bm0[i][cur] = bm0[i][prv] + bm0[i ^ (1 << (j - 1))][prv];
                bm1[i][cur] = bm1[i][prv];
            }
            else
            {
                bm0[i][cur] = bm0[i][prv];
                bm1[i][cur] = bm1[i][prv] + bm1[i ^ (1 << (j - 1))][prv];
            }
        }
        swap(cur, prv);
    }
    swap(cur, prv);

    while (Q--)
    {
        string t;
        cin >> t;

        int sz = t.size() - 1;

        int cnt_0 = 0, cnt_1 = 0, cnt_q = 0;
        vector<int> p0, p1, pq;
        for (int i = 0; i < t.size(); i++)
            if (t[i] == '0')
            {
                cnt_0++;
                p0.push_back(i);
            }
            else if (t[i] == '1')
            {
                cnt_1++;
                p1.push_back(i);
            }
            else
            {
                cnt_q++;
                pq.push_back(i);
            }

        int mn = min({cnt_0, cnt_1, cnt_q});
        if (mn == cnt_q)
        {
            int bit = 0;
            for (int j = 0; j < t.size(); j++)
            {
                if (t[j] == '1')
                    bit |= (1 << (sz - j));
            }

            int res = 0;
            for (int add = 0; add < (1 << cnt_q); add++)
            {
                int bit2 = bit;
                for (int j = 0; j < cnt_q; j++)
                {
                    if (add & (1 << j))
                        bit2 |= (1 << (sz - pq[j]));
                }

                res += val[bit2];
            }

            cout << res << endl;
        }
        else if (mn == cnt_0)
        {
            // we do PIE
            int bit = 0;
            for (int j = 0; j < t.size(); j++)
            {
                if (t[j] == '1')
                    bit |= (1 << (sz - j));
            }

            int res = 0;
            for (int add = 0; add < (1 << cnt_0); add++)
            {
                int bit2 = bit;
                int cnt = __builtin_popcount(add);
                for (int j = 0; j < cnt_0; j++)
                {
                    if (add & (1 << j))
                        bit2 |= (1 << (sz - p0[j]));
                }

                res += (cnt % 2 == 1 ? -1 : 1) * bm1[bit2][cur];
            }

            cout << res << endl;
        }
        else
        {
            // we do PIE too
            int bit = 0;
            for (int j = 0; j < t.size(); j++)
            {
                if (t[j] == '1' || t[j] == '?')
                    bit |= (1 << (sz - j));
            }

            int res = 0;
            for (int add = 0; add < (1 << cnt_1); add++)
            {
                int bit2 = bit;
                int cnt = __builtin_popcount(add);
                for (int j = 0; j < cnt_1; j++)
                {
                    if (add & (1 << j))
                        bit2 ^= (1 << (sz - p1[j]));
                }

                res += (cnt % 2 == 1 ? -1 : 1) * bm0[bit2][cur];
            }

            cout << res << endl;
        }
    }
}

Compilation message

snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (int i = 0; i < s.size(); i++)
      |                     ~~^~~~~~~~~~
snake_escaping.cpp:57:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |         for (int i = 0; i < t.size(); i++)
      |                         ~~^~~~~~~~~~
snake_escaping.cpp:78:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |             for (int j = 0; j < t.size(); j++)
      |                             ~~^~~~~~~~~~
snake_escaping.cpp:103:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |             for (int j = 0; j < t.size(); j++)
      |                             ~~^~~~~~~~~~
snake_escaping.cpp:129:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |             for (int j = 0; j < t.size(); j++)
      |                             ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 335 ms 4584 KB Output is correct
12 Correct 338 ms 4168 KB Output is correct
13 Correct 387 ms 3480 KB Output is correct
14 Correct 380 ms 3400 KB Output is correct
15 Correct 345 ms 4424 KB Output is correct
16 Correct 422 ms 3564 KB Output is correct
17 Correct 436 ms 3656 KB Output is correct
18 Correct 226 ms 5448 KB Output is correct
19 Correct 287 ms 2376 KB Output is correct
20 Correct 322 ms 4096 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 335 ms 4584 KB Output is correct
12 Correct 338 ms 4168 KB Output is correct
13 Correct 387 ms 3480 KB Output is correct
14 Correct 380 ms 3400 KB Output is correct
15 Correct 345 ms 4424 KB Output is correct
16 Correct 422 ms 3564 KB Output is correct
17 Correct 436 ms 3656 KB Output is correct
18 Correct 226 ms 5448 KB Output is correct
19 Correct 287 ms 2376 KB Output is correct
20 Correct 322 ms 4096 KB Output is correct
21 Correct 364 ms 5192 KB Output is correct
22 Correct 396 ms 5448 KB Output is correct
23 Correct 500 ms 4416 KB Output is correct
24 Correct 483 ms 4424 KB Output is correct
25 Correct 427 ms 6216 KB Output is correct
26 Correct 555 ms 4704 KB Output is correct
27 Correct 560 ms 4788 KB Output is correct
28 Correct 232 ms 7248 KB Output is correct
29 Correct 353 ms 3364 KB Output is correct
30 Correct 436 ms 5380 KB Output is correct
31 Correct 520 ms 5204 KB Output is correct
32 Correct 560 ms 5192 KB Output is correct
33 Correct 413 ms 4168 KB Output is correct
34 Correct 520 ms 4472 KB Output is correct
35 Correct 548 ms 4648 KB Output is correct
36 Correct 198 ms 3400 KB Output is correct
37 Correct 380 ms 5192 KB Output is correct
38 Correct 382 ms 3400 KB Output is correct
39 Correct 497 ms 4452 KB Output is correct
40 Correct 485 ms 4420 KB Output is correct

Subtask #4
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Runtime error 48 ms 65536 KB Execution killed with signal 9
12 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 335 ms 4584 KB Output is correct
12 Correct 338 ms 4168 KB Output is correct
13 Correct 387 ms 3480 KB Output is correct
14 Correct 380 ms 3400 KB Output is correct
15 Correct 345 ms 4424 KB Output is correct
16 Correct 422 ms 3564 KB Output is correct
17 Correct 436 ms 3656 KB Output is correct
18 Correct 226 ms 5448 KB Output is correct
19 Correct 287 ms 2376 KB Output is correct
20 Correct 322 ms 4096 KB Output is correct
21 Correct 364 ms 5192 KB Output is correct
22 Correct 396 ms 5448 KB Output is correct
23 Correct 500 ms 4416 KB Output is correct
24 Correct 483 ms 4424 KB Output is correct
25 Correct 427 ms 6216 KB Output is correct
26 Correct 555 ms 4704 KB Output is correct
27 Correct 560 ms 4788 KB Output is correct
28 Correct 232 ms 7248 KB Output is correct
29 Correct 353 ms 3364 KB Output is correct
30 Correct 436 ms 5380 KB Output is correct
31 Correct 520 ms 5204 KB Output is correct
32 Correct 560 ms 5192 KB Output is correct
33 Correct 413 ms 4168 KB Output is correct
34 Correct 520 ms 4472 KB Output is correct
35 Correct 548 ms 4648 KB Output is correct
36 Correct 198 ms 3400 KB Output is correct
37 Correct 380 ms 5192 KB Output is correct
38 Correct 382 ms 3400 KB Output is correct
39 Correct 497 ms 4452 KB Output is correct
40 Correct 485 ms 4420 KB Output is correct
41 Runtime error 48 ms 65536 KB Execution killed with signal 9
42 Halted 0 ms 0 KB -