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Submission #660086

# Submission time Handle Problem Language Result Execution time Memory
660086 2022-11-20T10:32:41 Z 600Mihnea Cubeword (CEOI19_cubeword) C++17
21 / 100
 68 ms 7940 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 = 6;
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 = 0; b < ALPHABET_SIZE; b++) {
        for (size_t c = 0; 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;
          }
        }
      }
    }
    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++) {
            for (size_t e = 0; e < ALPHABET_SIZE; e++) {
              for (size_t f = 0; f < ALPHABET_SIZE; f++) {
                solution = (solution + 1LL * cnt_words[a][d] * cnt_words[a][f] * cnt_words[b][d] % MODULO * cnt_words[b][e] * cnt_words[c][f] * cnt_words[c][e] % MODULO * cnt3[a][b][c] % MODULO * cnt3[d][e][f]) % MODULO;
              }
            }
          }
        }
      }
    }
    continue;
    vector<array<int, 5>> all;

    for (size_t corner1 = 0; corner1 < ALPHABET_SIZE; corner1++) {
      for (size_t corner2 = 0; corner2 < ALPHABET_SIZE; corner2++) {
        if (cnt_words[corner1][corner2] == 0) {
          continue;
        }
        for (size_t corner3 = 0; corner3 < ALPHABET_SIZE; corner3++) {
          if (cnt_words[corner2][corner3] == 0) {
            continue;
          }
          for (size_t corner4 = 0; corner4 < ALPHABET_SIZE; corner4++) {
            if (cnt_words[corner3][corner4] == 0) {
              continue;
            }
            if (cnt_words[corner1][corner4] == 0) {
              continue;
            }
            int prod = 1LL * cnt_words[corner1][corner2] % MODULO * cnt_words[corner2][corner3] % MODULO * cnt_words[corner3][corner4] % MODULO * cnt_words[corner4][corner1] % MODULO;
            all.push_back({corner1, corner2, corner3, corner4, prod});
          }
        }
      }
    }
    for (size_t i = 0; i < all.size(); i++) {
      size_t corner1 = all[i][0];
      size_t corner2 = all[i][1];
      size_t corner3 = all[i][2];
      size_t corner4 = all[i][3];
      int prod_i = all[i][4];
      for (size_t j = 0; j < all.size(); j++) {
        size_t corner5 = all[j][0];
        size_t corner6 = all[j][1];
        size_t corner7 = all[j][2];
        size_t corner8 = all[j][3];
        int prod_j = all[j][4];
        solution = (solution + 1LL * prod_i * prod_j % MODULO
           * cnt_words[corner1][corner5] % MODULO * cnt_words[corner2][corner6] % MODULO * cnt_words[corner3][corner7] % MODULO * cnt_words[corner4][corner8]) % MODULO;
      }
    }
    if (0) {
      cout << " ---> ";
      for (auto &word : words[word_length]) {
        cout << word << " ";
      }
      cout << "\n";
    }
  }
  cout << solution << "\n";

  return 0;
}

Compilation message

cubeword.cpp: In function 'int main()':
cubeword.cpp:107:28: warning: narrowing conversion of 'corner1' from 'size_t' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
  107 |             all.push_back({corner1, corner2, corner3, corner4, prod});
      |                            ^~~~~~~
cubeword.cpp:107:37: warning: narrowing conversion of 'corner2' from 'size_t' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
  107 |             all.push_back({corner1, corner2, corner3, corner4, prod});
      |                                     ^~~~~~~
cubeword.cpp:107:46: warning: narrowing conversion of 'corner3' from 'size_t' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
  107 |             all.push_back({corner1, corner2, corner3, corner4, prod});
      |                                              ^~~~~~~
cubeword.cpp:107:55: warning: narrowing conversion of 'corner4' from 'size_t' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
  107 |             all.push_back({corner1, corner2, corner3, corner4, prod});
      |                                                       ^~~~~~~
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 61 ms 7840 KB Output is correct
2 Correct 62 ms 7876 KB Output is correct
3 Correct 61 ms 7788 KB Output is correct
4 Correct 62 ms 7744 KB Output is correct
5 Correct 59 ms 7872 KB Output is correct
6 Correct 60 ms 7856 KB Output is correct
7 Correct 64 ms 7792 KB Output is correct
8 Correct 62 ms 7832 KB Output is correct
9 Correct 61 ms 7864 KB Output is correct
10 Correct 62 ms 7864 KB Output is correct
11 Correct 61 ms 7768 KB Output is correct
12 Correct 61 ms 7852 KB Output is correct
13 Correct 68 ms 7780 KB Output is correct
14 Correct 66 ms 7840 KB Output is correct
15 Correct 60 ms 7800 KB Output is correct
16 Correct 59 ms 7920 KB Output is correct
17 Correct 60 ms 7740 KB Output is correct
18 Correct 63 ms 7868 KB Output is correct
19 Correct 61 ms 7940 KB Output is correct
20 Correct 63 ms 7888 KB Output is correct
21 Correct 63 ms 7832 KB Output is correct

Subtask #2
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 7840 KB Output is correct
2 Correct 62 ms 7876 KB Output is correct
3 Correct 61 ms 7788 KB Output is correct
4 Correct 62 ms 7744 KB Output is correct
5 Correct 59 ms 7872 KB Output is correct
6 Correct 60 ms 7856 KB Output is correct
7 Correct 64 ms 7792 KB Output is correct
8 Correct 62 ms 7832 KB Output is correct
9 Correct 61 ms 7864 KB Output is correct
10 Correct 62 ms 7864 KB Output is correct
11 Correct 61 ms 7768 KB Output is correct
12 Correct 61 ms 7852 KB Output is correct
13 Correct 68 ms 7780 KB Output is correct
14 Correct 66 ms 7840 KB Output is correct
15 Correct 60 ms 7800 KB Output is correct
16 Correct 59 ms 7920 KB Output is correct
17 Correct 60 ms 7740 KB Output is correct
18 Correct 63 ms 7868 KB Output is correct
19 Correct 61 ms 7940 KB Output is correct
20 Correct 63 ms 7888 KB Output is correct
21 Correct 63 ms 7832 KB Output is correct
22 Runtime error 16 ms 7384 KB Execution killed with signal 11
23 Halted 0 ms 0 KB -

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 7840 KB Output is correct
2 Correct 62 ms 7876 KB Output is correct
3 Correct 61 ms 7788 KB Output is correct
4 Correct 62 ms 7744 KB Output is correct
5 Correct 59 ms 7872 KB Output is correct
6 Correct 60 ms 7856 KB Output is correct
7 Correct 64 ms 7792 KB Output is correct
8 Correct 62 ms 7832 KB Output is correct
9 Correct 61 ms 7864 KB Output is correct
10 Correct 62 ms 7864 KB Output is correct
11 Correct 61 ms 7768 KB Output is correct
12 Correct 61 ms 7852 KB Output is correct
13 Correct 68 ms 7780 KB Output is correct
14 Correct 66 ms 7840 KB Output is correct
15 Correct 60 ms 7800 KB Output is correct
16 Correct 59 ms 7920 KB Output is correct
17 Correct 60 ms 7740 KB Output is correct
18 Correct 63 ms 7868 KB Output is correct
19 Correct 61 ms 7940 KB Output is correct
20 Correct 63 ms 7888 KB Output is correct
21 Correct 63 ms 7832 KB Output is correct
22 Runtime error 16 ms 7384 KB Execution killed with signal 11
23 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 7840 KB Output is correct
2 Correct 62 ms 7876 KB Output is correct
3 Correct 61 ms 7788 KB Output is correct
4 Correct 62 ms 7744 KB Output is correct
5 Correct 59 ms 7872 KB Output is correct
6 Correct 60 ms 7856 KB Output is correct
7 Correct 64 ms 7792 KB Output is correct
8 Correct 62 ms 7832 KB Output is correct
9 Correct 61 ms 7864 KB Output is correct
10 Correct 62 ms 7864 KB Output is correct
11 Correct 61 ms 7768 KB Output is correct
12 Correct 61 ms 7852 KB Output is correct
13 Correct 68 ms 7780 KB Output is correct
14 Correct 66 ms 7840 KB Output is correct
15 Correct 60 ms 7800 KB Output is correct
16 Correct 59 ms 7920 KB Output is correct
17 Correct 60 ms 7740 KB Output is correct
18 Correct 63 ms 7868 KB Output is correct
19 Correct 61 ms 7940 KB Output is correct
20 Correct 63 ms 7888 KB Output is correct
21 Correct 63 ms 7832 KB Output is correct
22 Runtime error 16 ms 7384 KB Execution killed with signal 11
23 Halted 0 ms 0 KB -