#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll cnt[62][62][11];
ll Pre[62][62][62][11];
ll ans = 0;
const ll mod = 998244353;
map<string, int> M;
int f(char c)
{
if('a' <= c && c <= 'z') return (int)(c - 'a');
if('A' <= c && c <= 'Z') return (int)(c - 'A' + 26);
return c - '0' + 52;
}
int main()
{
int n; cin >> n;
for(int i=1;i<=n;i++)
{
string s; cin >> s;
string p = s;
reverse(p.begin(), p.end());
if(M[p]) continue;
M[s] = 1;
int t = s.size();
int a = f(s[0]);
int b = f(s[t-1]);
bool flag = true;
for(int i=0;i<t;i++)
{
if(s[i] != s[t-i-1]) flag = false;
}
if(a != b) { cnt[a][b][t]++; cnt[b][a][t]++; }
else if(flag) cnt[a][a][t]++;
else cnt[a][a][t] += 2;
}
for(int t=3;t<=10;t++)
{
for(int i=0;i<62;i++)
{
for(int j=i;j<62;j++)
{
for(int k=j;k<62;k++)
{
for(int p=0;p<62;p++)
{
ll tmp = 1;
tmp *= cnt[i][p][t];
tmp %= mod;
tmp *= cnt[j][p][t];
tmp %= mod;
tmp *= cnt[k][p][t];
tmp %= mod;
Pre[i][j][k][t] += tmp;
}
}
}
}
}
for(int t=3;t<=10;t++)
{
for(int a=0;a<62;a++)
{
for(int b=a;b<62;b++)
{
for(int c=b;c<62;c++)
{
for(int d=c;d<62;d++)
{
ll tmp = 1;
tmp *= Pre[a][b][c][t];
tmp %= mod;
tmp *= Pre[a][b][d][t];
tmp %= mod;
tmp *= Pre[a][c][d][t];
tmp %= mod;
tmp *= Pre[b][c][d][t];
tmp %= mod;
if(a == d) tmp *= 1;
else if(a == c || b == d) tmp *= 4;
else if(a == b && c == d) tmp *= 6;
else if(a == b || b == c || c == d) tmp *= 12;
else tmp *= 24;
ans = (ans + tmp)%mod;
}
}
}
}
}
cout << ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
418 ms |
24900 KB |
Output is correct |
2 |
Correct |
410 ms |
24988 KB |
Output is correct |
3 |
Correct |
411 ms |
25024 KB |
Output is correct |
4 |
Correct |
416 ms |
25000 KB |
Output is correct |
5 |
Correct |
410 ms |
25008 KB |
Output is correct |
6 |
Correct |
418 ms |
25184 KB |
Output is correct |
7 |
Correct |
411 ms |
25000 KB |
Output is correct |
8 |
Correct |
415 ms |
24996 KB |
Output is correct |
9 |
Correct |
418 ms |
25028 KB |
Output is correct |
10 |
Correct |
412 ms |
25148 KB |
Output is correct |
11 |
Correct |
407 ms |
25032 KB |
Output is correct |
12 |
Correct |
402 ms |
24984 KB |
Output is correct |
13 |
Correct |
432 ms |
25032 KB |
Output is correct |
14 |
Correct |
409 ms |
24988 KB |
Output is correct |
15 |
Correct |
426 ms |
24996 KB |
Output is correct |
16 |
Correct |
428 ms |
25056 KB |
Output is correct |
17 |
Correct |
411 ms |
24992 KB |
Output is correct |
18 |
Correct |
420 ms |
25156 KB |
Output is correct |
19 |
Correct |
403 ms |
24976 KB |
Output is correct |
20 |
Correct |
405 ms |
25036 KB |
Output is correct |
21 |
Correct |
411 ms |
25156 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
418 ms |
24900 KB |
Output is correct |
2 |
Correct |
410 ms |
24988 KB |
Output is correct |
3 |
Correct |
411 ms |
25024 KB |
Output is correct |
4 |
Correct |
416 ms |
25000 KB |
Output is correct |
5 |
Correct |
410 ms |
25008 KB |
Output is correct |
6 |
Correct |
418 ms |
25184 KB |
Output is correct |
7 |
Correct |
411 ms |
25000 KB |
Output is correct |
8 |
Correct |
415 ms |
24996 KB |
Output is correct |
9 |
Correct |
418 ms |
25028 KB |
Output is correct |
10 |
Correct |
412 ms |
25148 KB |
Output is correct |
11 |
Correct |
407 ms |
25032 KB |
Output is correct |
12 |
Correct |
402 ms |
24984 KB |
Output is correct |
13 |
Correct |
432 ms |
25032 KB |
Output is correct |
14 |
Correct |
409 ms |
24988 KB |
Output is correct |
15 |
Correct |
426 ms |
24996 KB |
Output is correct |
16 |
Correct |
428 ms |
25056 KB |
Output is correct |
17 |
Correct |
411 ms |
24992 KB |
Output is correct |
18 |
Correct |
420 ms |
25156 KB |
Output is correct |
19 |
Correct |
403 ms |
24976 KB |
Output is correct |
20 |
Correct |
405 ms |
25036 KB |
Output is correct |
21 |
Correct |
411 ms |
25156 KB |
Output is correct |
22 |
Correct |
408 ms |
26200 KB |
Output is correct |
23 |
Correct |
415 ms |
26224 KB |
Output is correct |
24 |
Correct |
404 ms |
26252 KB |
Output is correct |
25 |
Correct |
402 ms |
26328 KB |
Output is correct |
26 |
Correct |
394 ms |
26180 KB |
Output is correct |
27 |
Correct |
409 ms |
26336 KB |
Output is correct |
28 |
Correct |
401 ms |
26180 KB |
Output is correct |
29 |
Correct |
412 ms |
26180 KB |
Output is correct |
30 |
Correct |
393 ms |
26180 KB |
Output is correct |
31 |
Correct |
413 ms |
26272 KB |
Output is correct |
32 |
Correct |
391 ms |
26164 KB |
Output is correct |
33 |
Correct |
404 ms |
26336 KB |
Output is correct |
34 |
Correct |
413 ms |
26320 KB |
Output is correct |
35 |
Correct |
407 ms |
26232 KB |
Output is correct |
36 |
Correct |
415 ms |
26160 KB |
Output is correct |
37 |
Correct |
410 ms |
26220 KB |
Output is correct |
38 |
Correct |
397 ms |
26228 KB |
Output is correct |
39 |
Correct |
404 ms |
26192 KB |
Output is correct |
40 |
Correct |
403 ms |
26220 KB |
Output is correct |
41 |
Correct |
403 ms |
26112 KB |
Output is correct |
42 |
Correct |
408 ms |
26200 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
418 ms |
24900 KB |
Output is correct |
2 |
Correct |
410 ms |
24988 KB |
Output is correct |
3 |
Correct |
411 ms |
25024 KB |
Output is correct |
4 |
Correct |
416 ms |
25000 KB |
Output is correct |
5 |
Correct |
410 ms |
25008 KB |
Output is correct |
6 |
Correct |
418 ms |
25184 KB |
Output is correct |
7 |
Correct |
411 ms |
25000 KB |
Output is correct |
8 |
Correct |
415 ms |
24996 KB |
Output is correct |
9 |
Correct |
418 ms |
25028 KB |
Output is correct |
10 |
Correct |
412 ms |
25148 KB |
Output is correct |
11 |
Correct |
407 ms |
25032 KB |
Output is correct |
12 |
Correct |
402 ms |
24984 KB |
Output is correct |
13 |
Correct |
432 ms |
25032 KB |
Output is correct |
14 |
Correct |
409 ms |
24988 KB |
Output is correct |
15 |
Correct |
426 ms |
24996 KB |
Output is correct |
16 |
Correct |
428 ms |
25056 KB |
Output is correct |
17 |
Correct |
411 ms |
24992 KB |
Output is correct |
18 |
Correct |
420 ms |
25156 KB |
Output is correct |
19 |
Correct |
403 ms |
24976 KB |
Output is correct |
20 |
Correct |
405 ms |
25036 KB |
Output is correct |
21 |
Correct |
411 ms |
25156 KB |
Output is correct |
22 |
Correct |
408 ms |
26200 KB |
Output is correct |
23 |
Correct |
415 ms |
26224 KB |
Output is correct |
24 |
Correct |
404 ms |
26252 KB |
Output is correct |
25 |
Correct |
402 ms |
26328 KB |
Output is correct |
26 |
Correct |
394 ms |
26180 KB |
Output is correct |
27 |
Correct |
409 ms |
26336 KB |
Output is correct |
28 |
Correct |
401 ms |
26180 KB |
Output is correct |
29 |
Correct |
412 ms |
26180 KB |
Output is correct |
30 |
Correct |
393 ms |
26180 KB |
Output is correct |
31 |
Correct |
413 ms |
26272 KB |
Output is correct |
32 |
Correct |
391 ms |
26164 KB |
Output is correct |
33 |
Correct |
404 ms |
26336 KB |
Output is correct |
34 |
Correct |
413 ms |
26320 KB |
Output is correct |
35 |
Correct |
407 ms |
26232 KB |
Output is correct |
36 |
Correct |
415 ms |
26160 KB |
Output is correct |
37 |
Correct |
410 ms |
26220 KB |
Output is correct |
38 |
Correct |
397 ms |
26228 KB |
Output is correct |
39 |
Correct |
404 ms |
26192 KB |
Output is correct |
40 |
Correct |
403 ms |
26220 KB |
Output is correct |
41 |
Correct |
403 ms |
26112 KB |
Output is correct |
42 |
Correct |
408 ms |
26200 KB |
Output is correct |
43 |
Correct |
401 ms |
26420 KB |
Output is correct |
44 |
Correct |
388 ms |
26436 KB |
Output is correct |
45 |
Correct |
390 ms |
26532 KB |
Output is correct |
46 |
Correct |
392 ms |
26596 KB |
Output is correct |
47 |
Correct |
393 ms |
26696 KB |
Output is correct |
48 |
Correct |
382 ms |
26436 KB |
Output is correct |
49 |
Correct |
399 ms |
26460 KB |
Output is correct |
50 |
Correct |
392 ms |
26488 KB |
Output is correct |
51 |
Correct |
396 ms |
26784 KB |
Output is correct |
52 |
Correct |
381 ms |
26440 KB |
Output is correct |
53 |
Correct |
394 ms |
26668 KB |
Output is correct |
54 |
Correct |
388 ms |
26508 KB |
Output is correct |
55 |
Correct |
403 ms |
26612 KB |
Output is correct |
56 |
Correct |
424 ms |
26436 KB |
Output is correct |
57 |
Correct |
396 ms |
26584 KB |
Output is correct |
58 |
Correct |
388 ms |
26564 KB |
Output is correct |
59 |
Correct |
401 ms |
26492 KB |
Output is correct |
60 |
Correct |
395 ms |
26436 KB |
Output is correct |
61 |
Correct |
410 ms |
26488 KB |
Output is correct |
62 |
Correct |
400 ms |
26484 KB |
Output is correct |
63 |
Correct |
402 ms |
26440 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
418 ms |
24900 KB |
Output is correct |
2 |
Correct |
410 ms |
24988 KB |
Output is correct |
3 |
Correct |
411 ms |
25024 KB |
Output is correct |
4 |
Correct |
416 ms |
25000 KB |
Output is correct |
5 |
Correct |
410 ms |
25008 KB |
Output is correct |
6 |
Correct |
418 ms |
25184 KB |
Output is correct |
7 |
Correct |
411 ms |
25000 KB |
Output is correct |
8 |
Correct |
415 ms |
24996 KB |
Output is correct |
9 |
Correct |
418 ms |
25028 KB |
Output is correct |
10 |
Correct |
412 ms |
25148 KB |
Output is correct |
11 |
Correct |
407 ms |
25032 KB |
Output is correct |
12 |
Correct |
402 ms |
24984 KB |
Output is correct |
13 |
Correct |
432 ms |
25032 KB |
Output is correct |
14 |
Correct |
409 ms |
24988 KB |
Output is correct |
15 |
Correct |
426 ms |
24996 KB |
Output is correct |
16 |
Correct |
428 ms |
25056 KB |
Output is correct |
17 |
Correct |
411 ms |
24992 KB |
Output is correct |
18 |
Correct |
420 ms |
25156 KB |
Output is correct |
19 |
Correct |
403 ms |
24976 KB |
Output is correct |
20 |
Correct |
405 ms |
25036 KB |
Output is correct |
21 |
Correct |
411 ms |
25156 KB |
Output is correct |
22 |
Correct |
408 ms |
26200 KB |
Output is correct |
23 |
Correct |
415 ms |
26224 KB |
Output is correct |
24 |
Correct |
404 ms |
26252 KB |
Output is correct |
25 |
Correct |
402 ms |
26328 KB |
Output is correct |
26 |
Correct |
394 ms |
26180 KB |
Output is correct |
27 |
Correct |
409 ms |
26336 KB |
Output is correct |
28 |
Correct |
401 ms |
26180 KB |
Output is correct |
29 |
Correct |
412 ms |
26180 KB |
Output is correct |
30 |
Correct |
393 ms |
26180 KB |
Output is correct |
31 |
Correct |
413 ms |
26272 KB |
Output is correct |
32 |
Correct |
391 ms |
26164 KB |
Output is correct |
33 |
Correct |
404 ms |
26336 KB |
Output is correct |
34 |
Correct |
413 ms |
26320 KB |
Output is correct |
35 |
Correct |
407 ms |
26232 KB |
Output is correct |
36 |
Correct |
415 ms |
26160 KB |
Output is correct |
37 |
Correct |
410 ms |
26220 KB |
Output is correct |
38 |
Correct |
397 ms |
26228 KB |
Output is correct |
39 |
Correct |
404 ms |
26192 KB |
Output is correct |
40 |
Correct |
403 ms |
26220 KB |
Output is correct |
41 |
Correct |
403 ms |
26112 KB |
Output is correct |
42 |
Correct |
408 ms |
26200 KB |
Output is correct |
43 |
Correct |
401 ms |
26420 KB |
Output is correct |
44 |
Correct |
388 ms |
26436 KB |
Output is correct |
45 |
Correct |
390 ms |
26532 KB |
Output is correct |
46 |
Correct |
392 ms |
26596 KB |
Output is correct |
47 |
Correct |
393 ms |
26696 KB |
Output is correct |
48 |
Correct |
382 ms |
26436 KB |
Output is correct |
49 |
Correct |
399 ms |
26460 KB |
Output is correct |
50 |
Correct |
392 ms |
26488 KB |
Output is correct |
51 |
Correct |
396 ms |
26784 KB |
Output is correct |
52 |
Correct |
381 ms |
26440 KB |
Output is correct |
53 |
Correct |
394 ms |
26668 KB |
Output is correct |
54 |
Correct |
388 ms |
26508 KB |
Output is correct |
55 |
Correct |
403 ms |
26612 KB |
Output is correct |
56 |
Correct |
424 ms |
26436 KB |
Output is correct |
57 |
Correct |
396 ms |
26584 KB |
Output is correct |
58 |
Correct |
388 ms |
26564 KB |
Output is correct |
59 |
Correct |
401 ms |
26492 KB |
Output is correct |
60 |
Correct |
395 ms |
26436 KB |
Output is correct |
61 |
Correct |
410 ms |
26488 KB |
Output is correct |
62 |
Correct |
400 ms |
26484 KB |
Output is correct |
63 |
Correct |
402 ms |
26440 KB |
Output is correct |
64 |
Correct |
380 ms |
26888 KB |
Output is correct |
65 |
Correct |
384 ms |
26984 KB |
Output is correct |
66 |
Correct |
386 ms |
26888 KB |
Output is correct |
67 |
Correct |
397 ms |
26888 KB |
Output is correct |
68 |
Correct |
383 ms |
26816 KB |
Output is correct |
69 |
Correct |
389 ms |
26816 KB |
Output is correct |
70 |
Correct |
380 ms |
26888 KB |
Output is correct |
71 |
Correct |
408 ms |
26888 KB |
Output is correct |
72 |
Correct |
375 ms |
26820 KB |
Output is correct |
73 |
Correct |
386 ms |
27076 KB |
Output is correct |
74 |
Correct |
377 ms |
26820 KB |
Output is correct |
75 |
Correct |
396 ms |
27076 KB |
Output is correct |
76 |
Correct |
372 ms |
26824 KB |
Output is correct |
77 |
Correct |
391 ms |
26968 KB |
Output is correct |
78 |
Correct |
397 ms |
26820 KB |
Output is correct |
79 |
Correct |
391 ms |
26828 KB |
Output is correct |
80 |
Correct |
385 ms |
26820 KB |
Output is correct |
81 |
Correct |
388 ms |
26856 KB |
Output is correct |
82 |
Correct |
373 ms |
26824 KB |
Output is correct |
83 |
Correct |
407 ms |
27000 KB |
Output is correct |
84 |
Correct |
388 ms |
26972 KB |
Output is correct |