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Submission #470052

# Submission time Handle Problem Language Result Execution time Memory
470052 2021-09-02T19:10:55 Z flashmt Cubeword (CEOI19_cubeword) C++17
100 / 100
 390 ms 19684 KB 
#include <bits/stdc++.h>
using namespace std;
const int BASE = 998244353;
const int N = 62;

int toInt(char c)
{
  if (c >= 'a' && c <= 'z')
    return c - 'a';
  if (c >= 'A' && c <= 'Z')
    return c - 'A' + 26;
  return c - '0' + 52;
}

long long solve(set<string> a)
{
  int cnt[N][N] = {0};
  int f[N][N][N] = {0};
  for (auto s : a)
  {
    int x = toInt(s[0]), y = toInt(s.back());
    cnt[x][y]++;
  }

  for (int i = 0; i < N; i++)
    for (int j = i; j < N; j++)
      for (int p = j; p < N; p++)
        for (int q = 0; q < N; q++)
        {
          long long ways = 1LL * cnt[i][q] * cnt[j][q] % BASE * cnt[p][q] % BASE;
          f[i][j][p] += ways;
          if (f[i][j][p] >= BASE)
            f[i][j][p] -= BASE;
        }

  long long res = 0;
  for (int i = 0; i < N; i++)
    for (int j = i; j < N; j++)
      for (int p = j; p < N; p++)
        for (int q = p; q < N; q++)
        {
          long long ways = 1LL * f[i][j][p] * f[i][j][q] % BASE;
          ways = ways * f[i][p][q] % BASE;
          ways = ways * f[j][p][q] % BASE;
          if (i == q) res += ways;
          else if (i == p || j == q) res += ways * 4;
          else if (i == j && p == q) res += ways * 6;
          else if (i == j || j == p || p == q) res += ways * 12;
          else res += ways * 24;
          res %= BASE;
        }

  return res;
}

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

  int n;
  string s;
  set<string> a[11];
  cin >> n;
  while (n--)
  {
    cin >> s;
    a[s.size()].insert(s);
    reverse(s.begin(), s.end());
    a[s.size()].insert(s);
  }

  long long ans = 0;
  for (int i = 3; i <= 10; i++)
    ans = (ans + solve(a[i])) % BASE;
  cout << ans << endl;
}

Subtask #1
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 342 ms 19656 KB Output is correct
2 Correct 341 ms 19544 KB Output is correct
3 Correct 351 ms 19608 KB Output is correct
4 Correct 362 ms 19536 KB Output is correct
5 Correct 338 ms 19472 KB Output is correct
6 Correct 351 ms 19560 KB Output is correct
7 Correct 347 ms 19528 KB Output is correct
8 Correct 367 ms 19516 KB Output is correct
9 Correct 348 ms 19580 KB Output is correct
10 Correct 350 ms 19524 KB Output is correct
11 Correct 342 ms 19620 KB Output is correct
12 Correct 340 ms 19480 KB Output is correct
13 Correct 339 ms 19540 KB Output is correct
14 Correct 337 ms 19496 KB Output is correct
15 Correct 352 ms 19632 KB Output is correct
16 Correct 352 ms 19452 KB Output is correct
17 Correct 332 ms 19560 KB Output is correct
18 Correct 341 ms 19676 KB Output is correct
19 Correct 343 ms 19552 KB Output is correct
20 Correct 330 ms 19524 KB Output is correct
21 Correct 362 ms 19560 KB Output is correct

Subtask #2
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 342 ms 19656 KB Output is correct
2 Correct 341 ms 19544 KB Output is correct
3 Correct 351 ms 19608 KB Output is correct
4 Correct 362 ms 19536 KB Output is correct
5 Correct 338 ms 19472 KB Output is correct
6 Correct 351 ms 19560 KB Output is correct
7 Correct 347 ms 19528 KB Output is correct
8 Correct 367 ms 19516 KB Output is correct
9 Correct 348 ms 19580 KB Output is correct
10 Correct 350 ms 19524 KB Output is correct
11 Correct 342 ms 19620 KB Output is correct
12 Correct 340 ms 19480 KB Output is correct
13 Correct 339 ms 19540 KB Output is correct
14 Correct 337 ms 19496 KB Output is correct
15 Correct 352 ms 19632 KB Output is correct
16 Correct 352 ms 19452 KB Output is correct
17 Correct 332 ms 19560 KB Output is correct
18 Correct 341 ms 19676 KB Output is correct
19 Correct 343 ms 19552 KB Output is correct
20 Correct 330 ms 19524 KB Output is correct
21 Correct 362 ms 19560 KB Output is correct
22 Correct 349 ms 19476 KB Output is correct
23 Correct 336 ms 19336 KB Output is correct
24 Correct 367 ms 19364 KB Output is correct
25 Correct 362 ms 19348 KB Output is correct
26 Correct 331 ms 19312 KB Output is correct
27 Correct 340 ms 19328 KB Output is correct
28 Correct 338 ms 19376 KB Output is correct
29 Correct 336 ms 19468 KB Output is correct
30 Correct 336 ms 19236 KB Output is correct
31 Correct 338 ms 19344 KB Output is correct
32 Correct 359 ms 19496 KB Output is correct
33 Correct 339 ms 19368 KB Output is correct
34 Correct 345 ms 19460 KB Output is correct
35 Correct 335 ms 19336 KB Output is correct
36 Correct 347 ms 19432 KB Output is correct
37 Correct 332 ms 19292 KB Output is correct
38 Correct 340 ms 19448 KB Output is correct
39 Correct 332 ms 19224 KB Output is correct
40 Correct 357 ms 19232 KB Output is correct
41 Correct 340 ms 19316 KB Output is correct
42 Correct 345 ms 19468 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 342 ms 19656 KB Output is correct
2 Correct 341 ms 19544 KB Output is correct
3 Correct 351 ms 19608 KB Output is correct
4 Correct 362 ms 19536 KB Output is correct
5 Correct 338 ms 19472 KB Output is correct
6 Correct 351 ms 19560 KB Output is correct
7 Correct 347 ms 19528 KB Output is correct
8 Correct 367 ms 19516 KB Output is correct
9 Correct 348 ms 19580 KB Output is correct
10 Correct 350 ms 19524 KB Output is correct
11 Correct 342 ms 19620 KB Output is correct
12 Correct 340 ms 19480 KB Output is correct
13 Correct 339 ms 19540 KB Output is correct
14 Correct 337 ms 19496 KB Output is correct
15 Correct 352 ms 19632 KB Output is correct
16 Correct 352 ms 19452 KB Output is correct
17 Correct 332 ms 19560 KB Output is correct
18 Correct 341 ms 19676 KB Output is correct
19 Correct 343 ms 19552 KB Output is correct
20 Correct 330 ms 19524 KB Output is correct
21 Correct 362 ms 19560 KB Output is correct
22 Correct 349 ms 19476 KB Output is correct
23 Correct 336 ms 19336 KB Output is correct
24 Correct 367 ms 19364 KB Output is correct
25 Correct 362 ms 19348 KB Output is correct
26 Correct 331 ms 19312 KB Output is correct
27 Correct 340 ms 19328 KB Output is correct
28 Correct 338 ms 19376 KB Output is correct
29 Correct 336 ms 19468 KB Output is correct
30 Correct 336 ms 19236 KB Output is correct
31 Correct 338 ms 19344 KB Output is correct
32 Correct 359 ms 19496 KB Output is correct
33 Correct 339 ms 19368 KB Output is correct
34 Correct 345 ms 19460 KB Output is correct
35 Correct 335 ms 19336 KB Output is correct
36 Correct 347 ms 19432 KB Output is correct
37 Correct 332 ms 19292 KB Output is correct
38 Correct 340 ms 19448 KB Output is correct
39 Correct 332 ms 19224 KB Output is correct
40 Correct 357 ms 19232 KB Output is correct
41 Correct 340 ms 19316 KB Output is correct
42 Correct 345 ms 19468 KB Output is correct
43 Correct 347 ms 19356 KB Output is correct
44 Correct 350 ms 19364 KB Output is correct
45 Correct 334 ms 19336 KB Output is correct
46 Correct 344 ms 19416 KB Output is correct
47 Correct 358 ms 19288 KB Output is correct
48 Correct 348 ms 19424 KB Output is correct
49 Correct 338 ms 19404 KB Output is correct
50 Correct 336 ms 19312 KB Output is correct
51 Correct 330 ms 19332 KB Output is correct
52 Correct 349 ms 19304 KB Output is correct
53 Correct 344 ms 19356 KB Output is correct
54 Correct 342 ms 19436 KB Output is correct
55 Correct 345 ms 19340 KB Output is correct
56 Correct 336 ms 19452 KB Output is correct
57 Correct 336 ms 19224 KB Output is correct
58 Correct 349 ms 19396 KB Output is correct
59 Correct 333 ms 19348 KB Output is correct
60 Correct 356 ms 19344 KB Output is correct
61 Correct 373 ms 19380 KB Output is correct
62 Correct 335 ms 19284 KB Output is correct
63 Correct 335 ms 19256 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 342 ms 19656 KB Output is correct
2 Correct 341 ms 19544 KB Output is correct
3 Correct 351 ms 19608 KB Output is correct
4 Correct 362 ms 19536 KB Output is correct
5 Correct 338 ms 19472 KB Output is correct
6 Correct 351 ms 19560 KB Output is correct
7 Correct 347 ms 19528 KB Output is correct
8 Correct 367 ms 19516 KB Output is correct
9 Correct 348 ms 19580 KB Output is correct
10 Correct 350 ms 19524 KB Output is correct
11 Correct 342 ms 19620 KB Output is correct
12 Correct 340 ms 19480 KB Output is correct
13 Correct 339 ms 19540 KB Output is correct
14 Correct 337 ms 19496 KB Output is correct
15 Correct 352 ms 19632 KB Output is correct
16 Correct 352 ms 19452 KB Output is correct
17 Correct 332 ms 19560 KB Output is correct
18 Correct 341 ms 19676 KB Output is correct
19 Correct 343 ms 19552 KB Output is correct
20 Correct 330 ms 19524 KB Output is correct
21 Correct 362 ms 19560 KB Output is correct
22 Correct 349 ms 19476 KB Output is correct
23 Correct 336 ms 19336 KB Output is correct
24 Correct 367 ms 19364 KB Output is correct
25 Correct 362 ms 19348 KB Output is correct
26 Correct 331 ms 19312 KB Output is correct
27 Correct 340 ms 19328 KB Output is correct
28 Correct 338 ms 19376 KB Output is correct
29 Correct 336 ms 19468 KB Output is correct
30 Correct 336 ms 19236 KB Output is correct
31 Correct 338 ms 19344 KB Output is correct
32 Correct 359 ms 19496 KB Output is correct
33 Correct 339 ms 19368 KB Output is correct
34 Correct 345 ms 19460 KB Output is correct
35 Correct 335 ms 19336 KB Output is correct
36 Correct 347 ms 19432 KB Output is correct
37 Correct 332 ms 19292 KB Output is correct
38 Correct 340 ms 19448 KB Output is correct
39 Correct 332 ms 19224 KB Output is correct
40 Correct 357 ms 19232 KB Output is correct
41 Correct 340 ms 19316 KB Output is correct
42 Correct 345 ms 19468 KB Output is correct
43 Correct 347 ms 19356 KB Output is correct
44 Correct 350 ms 19364 KB Output is correct
45 Correct 334 ms 19336 KB Output is correct
46 Correct 344 ms 19416 KB Output is correct
47 Correct 358 ms 19288 KB Output is correct
48 Correct 348 ms 19424 KB Output is correct
49 Correct 338 ms 19404 KB Output is correct
50 Correct 336 ms 19312 KB Output is correct
51 Correct 330 ms 19332 KB Output is correct
52 Correct 349 ms 19304 KB Output is correct
53 Correct 344 ms 19356 KB Output is correct
54 Correct 342 ms 19436 KB Output is correct
55 Correct 345 ms 19340 KB Output is correct
56 Correct 336 ms 19452 KB Output is correct
57 Correct 336 ms 19224 KB Output is correct
58 Correct 349 ms 19396 KB Output is correct
59 Correct 333 ms 19348 KB Output is correct
60 Correct 356 ms 19344 KB Output is correct
61 Correct 373 ms 19380 KB Output is correct
62 Correct 335 ms 19284 KB Output is correct
63 Correct 335 ms 19256 KB Output is correct
64 Correct 339 ms 19552 KB Output is correct
65 Correct 346 ms 19560 KB Output is correct
66 Correct 356 ms 19460 KB Output is correct
67 Correct 340 ms 19548 KB Output is correct
68 Correct 347 ms 19508 KB Output is correct
69 Correct 370 ms 19528 KB Output is correct
70 Correct 372 ms 19548 KB Output is correct
71 Correct 370 ms 19652 KB Output is correct
72 Correct 340 ms 19528 KB Output is correct
73 Correct 390 ms 19556 KB Output is correct
74 Correct 350 ms 19684 KB Output is correct
75 Correct 337 ms 19552 KB Output is correct
76 Correct 345 ms 19528 KB Output is correct
77 Correct 340 ms 19540 KB Output is correct
78 Correct 372 ms 19508 KB Output is correct
79 Correct 346 ms 19564 KB Output is correct
80 Correct 355 ms 19596 KB Output is correct
81 Correct 343 ms 19520 KB Output is correct
82 Correct 351 ms 19652 KB Output is correct
83 Correct 350 ms 19544 KB Output is correct
84 Correct 374 ms 19556 KB Output is correct