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Submission #660105

# Submission time Handle Problem Language Result Execution time Memory
660105 2022-11-20T11:10:25 Z 600Mihnea Cubeword (CEOI19_cubeword) C++17
50 / 100
 61 ms 8232 KB 
bool home = 0;
#include <bits/stdc++.h>

using namespace std;

const int MODULO = 998244353;

int get_char_id(char ch) {
  assert(('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') || ('0' <= ch && ch <= '9'));
  if ('a' <= ch && ch <= 'z') {
    return ch - 'a';
  }
  if ('A' <= ch && ch <= 'Z') {
    return 1 + get_char_id('z') + ch - 'A';
  }
  return 1 + get_char_id('Z') + ch - '0';
}

const int MAX_WORD_LENGTH = 10;
///const int ALPHABET_SIZE = 2 * 26 + 10;
const int ALPHABET_SIZE = 16;
vector<string> words[MAX_WORD_LENGTH + 1];
int cnt_words[ALPHABET_SIZE][ALPHABET_SIZE];
int cnt3[ALPHABET_SIZE][ALPHABET_SIZE][ALPHABET_SIZE];

int main() {
  if (home == 0) {
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  } else {
    freopen ("input.txt", "r", stdin);
  }

  {
    size_t num_samples;
    cin >> num_samples;
    for (size_t sample_index = 0; sample_index < num_samples; sample_index++) {
      string word;
      cin >> word;
      words[word.size()].push_back(word);
    }
  }
  int solution = 0;
  for (size_t word_length = 1; word_length <= MAX_WORD_LENGTH; word_length++) {
    if (words[word_length].empty()) {
      continue;
    }
    size_t word_count = words[word_length].size();
    for (size_t word_index = 0; word_index < word_count; word_index++) {
      string reverse_word = words[word_length][word_index];
      reverse(reverse_word.begin(), reverse_word.end());
      words[word_length].push_back(reverse_word);
    }
    sort(words[word_length].begin(), words[word_length].end());
    words[word_length].resize(unique(words[word_length].begin(), words[word_length].end()) - words[word_length].begin());
    word_count = words[word_length].size();
    for (size_t first_letter = 0; first_letter < ALPHABET_SIZE; first_letter++) {
      for (size_t last_letter = 0; last_letter < ALPHABET_SIZE; last_letter++) {
        cnt_words[first_letter][last_letter] = 0;
      }
    }
    for (size_t word_index = 0; word_index < word_count; word_index++) {
      cnt_words[get_char_id(words[word_length][word_index][0])][get_char_id(words[word_length][word_index].back())]++;
    }
    for (size_t a = 0; a < ALPHABET_SIZE; a++) {
      for (size_t b = a; b < ALPHABET_SIZE; b++) {
        for (size_t c = b; c < ALPHABET_SIZE; c++) {
          cnt3[a][b][c] = 0;
          for (size_t d = 0; d < ALPHABET_SIZE; d++) {
            cnt3[a][b][c] = (cnt3[a][b][c] + 1LL * cnt_words[d][a] * cnt_words[d][b] * cnt_words[d][c]) % MODULO;
          }
          cnt3[a][c][b] = cnt3[b][a][c] = cnt3[b][c][a] = cnt3[c][a][b] = cnt3[c][b][a] = cnt3[a][b][c];
        }
      }
    }
    for (size_t a = 0; a < ALPHABET_SIZE; a++) {
      for (size_t b = 0; b < a; b++) {
        for (size_t c = 0; c < b; c++) {
          for (size_t d = 0; d < c; d++) {
            if (a != b && a != c && a != d && b != c && b != d && c != d) {
              int x1 = cnt3[a][b][c];
              int x2 = cnt3[a][d][b];
              int x3 = cnt3[a][c][d];
              int x4 = cnt3[b][c][d];
              solution = (solution + 24LL * x1 % MODULO * x2 % MODULO * x3 % MODULO * x4) % MODULO;
            }
          }
        }
      }
    }
    for (size_t a = 0; a < ALPHABET_SIZE; a++) {
      for (size_t b = 0; b < ALPHABET_SIZE; b++) {
        for (size_t c = 0; c < ALPHABET_SIZE; c++) {
          for (size_t d = 0; d < ALPHABET_SIZE; d++) {
            if (a == b || a == c || a == d || b == c || b == d || c == d) {
              int x1 = cnt3[a][b][c];
              int x2 = cnt3[a][d][b];
              int x3 = cnt3[a][c][d];
              int x4 = cnt3[b][c][d];
              solution = (solution + 1LL * x1 * x2 % MODULO * x3 % MODULO * x4) % MODULO;
            }
          }
        }
      }
    }
  }
  cout << solution << "\n";

  return 0;
}

Compilation message

cubeword.cpp: In function 'int main()':
cubeword.cpp:30:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     freopen ("input.txt", "r", stdin);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 7812 KB Output is correct
2 Correct 57 ms 7940 KB Output is correct
3 Correct 59 ms 7828 KB Output is correct
4 Correct 58 ms 7808 KB Output is correct
5 Correct 58 ms 7884 KB Output is correct
6 Correct 58 ms 7816 KB Output is correct
7 Correct 58 ms 7776 KB Output is correct
8 Correct 58 ms 7912 KB Output is correct
9 Correct 58 ms 7932 KB Output is correct
10 Correct 57 ms 7812 KB Output is correct
11 Correct 58 ms 7780 KB Output is correct
12 Correct 57 ms 7788 KB Output is correct
13 Correct 58 ms 7848 KB Output is correct
14 Correct 58 ms 7860 KB Output is correct
15 Correct 58 ms 7820 KB Output is correct
16 Correct 61 ms 7944 KB Output is correct
17 Correct 60 ms 7784 KB Output is correct
18 Correct 57 ms 7908 KB Output is correct
19 Correct 58 ms 7920 KB Output is correct
20 Correct 59 ms 7936 KB Output is correct
21 Correct 58 ms 7872 KB Output is correct

Subtask #2
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 7812 KB Output is correct
2 Correct 57 ms 7940 KB Output is correct
3 Correct 59 ms 7828 KB Output is correct
4 Correct 58 ms 7808 KB Output is correct
5 Correct 58 ms 7884 KB Output is correct
6 Correct 58 ms 7816 KB Output is correct
7 Correct 58 ms 7776 KB Output is correct
8 Correct 58 ms 7912 KB Output is correct
9 Correct 58 ms 7932 KB Output is correct
10 Correct 57 ms 7812 KB Output is correct
11 Correct 58 ms 7780 KB Output is correct
12 Correct 57 ms 7788 KB Output is correct
13 Correct 58 ms 7848 KB Output is correct
14 Correct 58 ms 7860 KB Output is correct
15 Correct 58 ms 7820 KB Output is correct
16 Correct 61 ms 7944 KB Output is correct
17 Correct 60 ms 7784 KB Output is correct
18 Correct 57 ms 7908 KB Output is correct
19 Correct 58 ms 7920 KB Output is correct
20 Correct 59 ms 7936 KB Output is correct
21 Correct 58 ms 7872 KB Output is correct
22 Correct 56 ms 6840 KB Output is correct
23 Correct 56 ms 7056 KB Output is correct
24 Correct 55 ms 6924 KB Output is correct
25 Correct 56 ms 6828 KB Output is correct
26 Correct 55 ms 7012 KB Output is correct
27 Correct 56 ms 6896 KB Output is correct
28 Correct 54 ms 6972 KB Output is correct
29 Correct 56 ms 6892 KB Output is correct
30 Correct 55 ms 6932 KB Output is correct
31 Correct 57 ms 6948 KB Output is correct
32 Correct 56 ms 6912 KB Output is correct
33 Correct 55 ms 6968 KB Output is correct
34 Correct 58 ms 6908 KB Output is correct
35 Correct 55 ms 7012 KB Output is correct
36 Correct 59 ms 6964 KB Output is correct
37 Correct 56 ms 6848 KB Output is correct
38 Correct 55 ms 6924 KB Output is correct
39 Correct 58 ms 6948 KB Output is correct
40 Correct 57 ms 6868 KB Output is correct
41 Correct 58 ms 6908 KB Output is correct
42 Correct 55 ms 7472 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 7812 KB Output is correct
2 Correct 57 ms 7940 KB Output is correct
3 Correct 59 ms 7828 KB Output is correct
4 Correct 58 ms 7808 KB Output is correct
5 Correct 58 ms 7884 KB Output is correct
6 Correct 58 ms 7816 KB Output is correct
7 Correct 58 ms 7776 KB Output is correct
8 Correct 58 ms 7912 KB Output is correct
9 Correct 58 ms 7932 KB Output is correct
10 Correct 57 ms 7812 KB Output is correct
11 Correct 58 ms 7780 KB Output is correct
12 Correct 57 ms 7788 KB Output is correct
13 Correct 58 ms 7848 KB Output is correct
14 Correct 58 ms 7860 KB Output is correct
15 Correct 58 ms 7820 KB Output is correct
16 Correct 61 ms 7944 KB Output is correct
17 Correct 60 ms 7784 KB Output is correct
18 Correct 57 ms 7908 KB Output is correct
19 Correct 58 ms 7920 KB Output is correct
20 Correct 59 ms 7936 KB Output is correct
21 Correct 58 ms 7872 KB Output is correct
22 Correct 56 ms 6840 KB Output is correct
23 Correct 56 ms 7056 KB Output is correct
24 Correct 55 ms 6924 KB Output is correct
25 Correct 56 ms 6828 KB Output is correct
26 Correct 55 ms 7012 KB Output is correct
27 Correct 56 ms 6896 KB Output is correct
28 Correct 54 ms 6972 KB Output is correct
29 Correct 56 ms 6892 KB Output is correct
30 Correct 55 ms 6932 KB Output is correct
31 Correct 57 ms 6948 KB Output is correct
32 Correct 56 ms 6912 KB Output is correct
33 Correct 55 ms 6968 KB Output is correct
34 Correct 58 ms 6908 KB Output is correct
35 Correct 55 ms 7012 KB Output is correct
36 Correct 59 ms 6964 KB Output is correct
37 Correct 56 ms 6848 KB Output is correct
38 Correct 55 ms 6924 KB Output is correct
39 Correct 58 ms 6948 KB Output is correct
40 Correct 57 ms 6868 KB Output is correct
41 Correct 58 ms 6908 KB Output is correct
42 Correct 55 ms 7472 KB Output is correct
43 Runtime error 19 ms 8232 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 7812 KB Output is correct
2 Correct 57 ms 7940 KB Output is correct
3 Correct 59 ms 7828 KB Output is correct
4 Correct 58 ms 7808 KB Output is correct
5 Correct 58 ms 7884 KB Output is correct
6 Correct 58 ms 7816 KB Output is correct
7 Correct 58 ms 7776 KB Output is correct
8 Correct 58 ms 7912 KB Output is correct
9 Correct 58 ms 7932 KB Output is correct
10 Correct 57 ms 7812 KB Output is correct
11 Correct 58 ms 7780 KB Output is correct
12 Correct 57 ms 7788 KB Output is correct
13 Correct 58 ms 7848 KB Output is correct
14 Correct 58 ms 7860 KB Output is correct
15 Correct 58 ms 7820 KB Output is correct
16 Correct 61 ms 7944 KB Output is correct
17 Correct 60 ms 7784 KB Output is correct
18 Correct 57 ms 7908 KB Output is correct
19 Correct 58 ms 7920 KB Output is correct
20 Correct 59 ms 7936 KB Output is correct
21 Correct 58 ms 7872 KB Output is correct
22 Correct 56 ms 6840 KB Output is correct
23 Correct 56 ms 7056 KB Output is correct
24 Correct 55 ms 6924 KB Output is correct
25 Correct 56 ms 6828 KB Output is correct
26 Correct 55 ms 7012 KB Output is correct
27 Correct 56 ms 6896 KB Output is correct
28 Correct 54 ms 6972 KB Output is correct
29 Correct 56 ms 6892 KB Output is correct
30 Correct 55 ms 6932 KB Output is correct
31 Correct 57 ms 6948 KB Output is correct
32 Correct 56 ms 6912 KB Output is correct
33 Correct 55 ms 6968 KB Output is correct
34 Correct 58 ms 6908 KB Output is correct
35 Correct 55 ms 7012 KB Output is correct
36 Correct 59 ms 6964 KB Output is correct
37 Correct 56 ms 6848 KB Output is correct
38 Correct 55 ms 6924 KB Output is correct
39 Correct 58 ms 6948 KB Output is correct
40 Correct 57 ms 6868 KB Output is correct
41 Correct 58 ms 6908 KB Output is correct
42 Correct 55 ms 7472 KB Output is correct
43 Runtime error 19 ms 8232 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -