#include <bits/stdc++.h>
/*#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#pragma GCC optimize("unroll-loops")*/
using namespace std;
typedef long long ll;
typedef long double ld;
const int MOD = 998244353;
int add(int a, int b){
return (a+b)%MOD;
}
int mul(int a, int b){
return ((ll)a * b)%MOD;
}
int br[11][70][70];
int dp[70][70][70];
int koji(char c){
if('a' <= c && c <= 'z') return c-'a';
if('A' <= c && c <= 'Z') return 26 + (c-'A');
return 52 + (c-'0');
}
int perm(int a, int b, int c, int d){
if(a == b && b == c && c == d) return 1;
if(a == b && b == c) return 4;
if(b == c && c == d) return 4;
if(a == b && c == d) return 6;
if(a == b) return 12;
if(b == c) return 12;
if(c == d) return 12;
return 24;
}
int main(){
ios_base::sync_with_stdio(false);
cout.precision(10);
cout << fixed;
int n;
cin >> n;
set <string> q;
while(n--){
string s;
cin >> s;
q.insert(s);
reverse(s.begin(), s.end());
q.insert(s);
}
for(auto s : q){
br[s.size()][koji(s[0])][koji(s[s.size()-1])]++;
}
int res = 0;
for(int sz=3; sz<=10; sz++){
for(int i=0; i<62; i++){
for(int j=i; j<62; j++){
for(int k=j; k<62; k++){
dp[i][j][k] = 0;
for(int l=0; l<62; l++){
dp[i][j][k] = add(dp[i][j][k], mul(br[sz][i][l], mul(br[sz][j][l], br[sz][k][l])));
}
}
}
}
for(int i=0; i<62; i++){
for(int j=i; j<62; j++){
for(int k=j; k<62; k++){
for(int l=k; l<62; l++){
res = add(res, mul(perm(i, j, k, l), mul(dp[i][j][k], mul(dp[i][j][l], mul(dp[i][k][l], dp[j][k][l])))));
}
}
}
}
}
cout << res;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
376 ms |
16472 KB |
Output is correct |
2 |
Correct |
379 ms |
16448 KB |
Output is correct |
3 |
Correct |
381 ms |
16512 KB |
Output is correct |
4 |
Correct |
372 ms |
16464 KB |
Output is correct |
5 |
Correct |
369 ms |
16576 KB |
Output is correct |
6 |
Correct |
361 ms |
16500 KB |
Output is correct |
7 |
Correct |
369 ms |
16460 KB |
Output is correct |
8 |
Correct |
357 ms |
16460 KB |
Output is correct |
9 |
Correct |
360 ms |
16448 KB |
Output is correct |
10 |
Correct |
360 ms |
16464 KB |
Output is correct |
11 |
Correct |
370 ms |
16540 KB |
Output is correct |
12 |
Correct |
357 ms |
16560 KB |
Output is correct |
13 |
Correct |
376 ms |
16456 KB |
Output is correct |
14 |
Correct |
360 ms |
16400 KB |
Output is correct |
15 |
Correct |
360 ms |
16580 KB |
Output is correct |
16 |
Correct |
402 ms |
16444 KB |
Output is correct |
17 |
Correct |
370 ms |
16460 KB |
Output is correct |
18 |
Correct |
365 ms |
16488 KB |
Output is correct |
19 |
Correct |
371 ms |
16456 KB |
Output is correct |
20 |
Correct |
370 ms |
16452 KB |
Output is correct |
21 |
Correct |
364 ms |
16400 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
376 ms |
16472 KB |
Output is correct |
2 |
Correct |
379 ms |
16448 KB |
Output is correct |
3 |
Correct |
381 ms |
16512 KB |
Output is correct |
4 |
Correct |
372 ms |
16464 KB |
Output is correct |
5 |
Correct |
369 ms |
16576 KB |
Output is correct |
6 |
Correct |
361 ms |
16500 KB |
Output is correct |
7 |
Correct |
369 ms |
16460 KB |
Output is correct |
8 |
Correct |
357 ms |
16460 KB |
Output is correct |
9 |
Correct |
360 ms |
16448 KB |
Output is correct |
10 |
Correct |
360 ms |
16464 KB |
Output is correct |
11 |
Correct |
370 ms |
16540 KB |
Output is correct |
12 |
Correct |
357 ms |
16560 KB |
Output is correct |
13 |
Correct |
376 ms |
16456 KB |
Output is correct |
14 |
Correct |
360 ms |
16400 KB |
Output is correct |
15 |
Correct |
360 ms |
16580 KB |
Output is correct |
16 |
Correct |
402 ms |
16444 KB |
Output is correct |
17 |
Correct |
370 ms |
16460 KB |
Output is correct |
18 |
Correct |
365 ms |
16488 KB |
Output is correct |
19 |
Correct |
371 ms |
16456 KB |
Output is correct |
20 |
Correct |
370 ms |
16452 KB |
Output is correct |
21 |
Correct |
364 ms |
16400 KB |
Output is correct |
22 |
Correct |
365 ms |
17064 KB |
Output is correct |
23 |
Correct |
371 ms |
17052 KB |
Output is correct |
24 |
Correct |
363 ms |
16976 KB |
Output is correct |
25 |
Correct |
364 ms |
17044 KB |
Output is correct |
26 |
Correct |
376 ms |
16964 KB |
Output is correct |
27 |
Correct |
377 ms |
17152 KB |
Output is correct |
28 |
Correct |
366 ms |
17012 KB |
Output is correct |
29 |
Correct |
369 ms |
17104 KB |
Output is correct |
30 |
Correct |
392 ms |
17044 KB |
Output is correct |
31 |
Correct |
380 ms |
17048 KB |
Output is correct |
32 |
Correct |
386 ms |
17036 KB |
Output is correct |
33 |
Correct |
376 ms |
17040 KB |
Output is correct |
34 |
Correct |
395 ms |
16952 KB |
Output is correct |
35 |
Correct |
376 ms |
16996 KB |
Output is correct |
36 |
Correct |
365 ms |
17056 KB |
Output is correct |
37 |
Correct |
378 ms |
17012 KB |
Output is correct |
38 |
Correct |
376 ms |
17056 KB |
Output is correct |
39 |
Correct |
363 ms |
16992 KB |
Output is correct |
40 |
Correct |
371 ms |
16988 KB |
Output is correct |
41 |
Correct |
359 ms |
17156 KB |
Output is correct |
42 |
Correct |
372 ms |
17088 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
376 ms |
16472 KB |
Output is correct |
2 |
Correct |
379 ms |
16448 KB |
Output is correct |
3 |
Correct |
381 ms |
16512 KB |
Output is correct |
4 |
Correct |
372 ms |
16464 KB |
Output is correct |
5 |
Correct |
369 ms |
16576 KB |
Output is correct |
6 |
Correct |
361 ms |
16500 KB |
Output is correct |
7 |
Correct |
369 ms |
16460 KB |
Output is correct |
8 |
Correct |
357 ms |
16460 KB |
Output is correct |
9 |
Correct |
360 ms |
16448 KB |
Output is correct |
10 |
Correct |
360 ms |
16464 KB |
Output is correct |
11 |
Correct |
370 ms |
16540 KB |
Output is correct |
12 |
Correct |
357 ms |
16560 KB |
Output is correct |
13 |
Correct |
376 ms |
16456 KB |
Output is correct |
14 |
Correct |
360 ms |
16400 KB |
Output is correct |
15 |
Correct |
360 ms |
16580 KB |
Output is correct |
16 |
Correct |
402 ms |
16444 KB |
Output is correct |
17 |
Correct |
370 ms |
16460 KB |
Output is correct |
18 |
Correct |
365 ms |
16488 KB |
Output is correct |
19 |
Correct |
371 ms |
16456 KB |
Output is correct |
20 |
Correct |
370 ms |
16452 KB |
Output is correct |
21 |
Correct |
364 ms |
16400 KB |
Output is correct |
22 |
Correct |
365 ms |
17064 KB |
Output is correct |
23 |
Correct |
371 ms |
17052 KB |
Output is correct |
24 |
Correct |
363 ms |
16976 KB |
Output is correct |
25 |
Correct |
364 ms |
17044 KB |
Output is correct |
26 |
Correct |
376 ms |
16964 KB |
Output is correct |
27 |
Correct |
377 ms |
17152 KB |
Output is correct |
28 |
Correct |
366 ms |
17012 KB |
Output is correct |
29 |
Correct |
369 ms |
17104 KB |
Output is correct |
30 |
Correct |
392 ms |
17044 KB |
Output is correct |
31 |
Correct |
380 ms |
17048 KB |
Output is correct |
32 |
Correct |
386 ms |
17036 KB |
Output is correct |
33 |
Correct |
376 ms |
17040 KB |
Output is correct |
34 |
Correct |
395 ms |
16952 KB |
Output is correct |
35 |
Correct |
376 ms |
16996 KB |
Output is correct |
36 |
Correct |
365 ms |
17056 KB |
Output is correct |
37 |
Correct |
378 ms |
17012 KB |
Output is correct |
38 |
Correct |
376 ms |
17056 KB |
Output is correct |
39 |
Correct |
363 ms |
16992 KB |
Output is correct |
40 |
Correct |
371 ms |
16988 KB |
Output is correct |
41 |
Correct |
359 ms |
17156 KB |
Output is correct |
42 |
Correct |
372 ms |
17088 KB |
Output is correct |
43 |
Correct |
365 ms |
17220 KB |
Output is correct |
44 |
Correct |
378 ms |
17244 KB |
Output is correct |
45 |
Correct |
367 ms |
17348 KB |
Output is correct |
46 |
Correct |
366 ms |
17284 KB |
Output is correct |
47 |
Correct |
360 ms |
17348 KB |
Output is correct |
48 |
Correct |
371 ms |
17220 KB |
Output is correct |
49 |
Correct |
374 ms |
17204 KB |
Output is correct |
50 |
Correct |
363 ms |
17296 KB |
Output is correct |
51 |
Correct |
363 ms |
17168 KB |
Output is correct |
52 |
Correct |
365 ms |
17228 KB |
Output is correct |
53 |
Correct |
361 ms |
17300 KB |
Output is correct |
54 |
Correct |
363 ms |
17252 KB |
Output is correct |
55 |
Correct |
369 ms |
17292 KB |
Output is correct |
56 |
Correct |
375 ms |
17280 KB |
Output is correct |
57 |
Correct |
378 ms |
17188 KB |
Output is correct |
58 |
Correct |
374 ms |
17236 KB |
Output is correct |
59 |
Correct |
364 ms |
17288 KB |
Output is correct |
60 |
Correct |
361 ms |
17284 KB |
Output is correct |
61 |
Correct |
368 ms |
17344 KB |
Output is correct |
62 |
Correct |
366 ms |
17280 KB |
Output is correct |
63 |
Correct |
366 ms |
17296 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
376 ms |
16472 KB |
Output is correct |
2 |
Correct |
379 ms |
16448 KB |
Output is correct |
3 |
Correct |
381 ms |
16512 KB |
Output is correct |
4 |
Correct |
372 ms |
16464 KB |
Output is correct |
5 |
Correct |
369 ms |
16576 KB |
Output is correct |
6 |
Correct |
361 ms |
16500 KB |
Output is correct |
7 |
Correct |
369 ms |
16460 KB |
Output is correct |
8 |
Correct |
357 ms |
16460 KB |
Output is correct |
9 |
Correct |
360 ms |
16448 KB |
Output is correct |
10 |
Correct |
360 ms |
16464 KB |
Output is correct |
11 |
Correct |
370 ms |
16540 KB |
Output is correct |
12 |
Correct |
357 ms |
16560 KB |
Output is correct |
13 |
Correct |
376 ms |
16456 KB |
Output is correct |
14 |
Correct |
360 ms |
16400 KB |
Output is correct |
15 |
Correct |
360 ms |
16580 KB |
Output is correct |
16 |
Correct |
402 ms |
16444 KB |
Output is correct |
17 |
Correct |
370 ms |
16460 KB |
Output is correct |
18 |
Correct |
365 ms |
16488 KB |
Output is correct |
19 |
Correct |
371 ms |
16456 KB |
Output is correct |
20 |
Correct |
370 ms |
16452 KB |
Output is correct |
21 |
Correct |
364 ms |
16400 KB |
Output is correct |
22 |
Correct |
365 ms |
17064 KB |
Output is correct |
23 |
Correct |
371 ms |
17052 KB |
Output is correct |
24 |
Correct |
363 ms |
16976 KB |
Output is correct |
25 |
Correct |
364 ms |
17044 KB |
Output is correct |
26 |
Correct |
376 ms |
16964 KB |
Output is correct |
27 |
Correct |
377 ms |
17152 KB |
Output is correct |
28 |
Correct |
366 ms |
17012 KB |
Output is correct |
29 |
Correct |
369 ms |
17104 KB |
Output is correct |
30 |
Correct |
392 ms |
17044 KB |
Output is correct |
31 |
Correct |
380 ms |
17048 KB |
Output is correct |
32 |
Correct |
386 ms |
17036 KB |
Output is correct |
33 |
Correct |
376 ms |
17040 KB |
Output is correct |
34 |
Correct |
395 ms |
16952 KB |
Output is correct |
35 |
Correct |
376 ms |
16996 KB |
Output is correct |
36 |
Correct |
365 ms |
17056 KB |
Output is correct |
37 |
Correct |
378 ms |
17012 KB |
Output is correct |
38 |
Correct |
376 ms |
17056 KB |
Output is correct |
39 |
Correct |
363 ms |
16992 KB |
Output is correct |
40 |
Correct |
371 ms |
16988 KB |
Output is correct |
41 |
Correct |
359 ms |
17156 KB |
Output is correct |
42 |
Correct |
372 ms |
17088 KB |
Output is correct |
43 |
Correct |
365 ms |
17220 KB |
Output is correct |
44 |
Correct |
378 ms |
17244 KB |
Output is correct |
45 |
Correct |
367 ms |
17348 KB |
Output is correct |
46 |
Correct |
366 ms |
17284 KB |
Output is correct |
47 |
Correct |
360 ms |
17348 KB |
Output is correct |
48 |
Correct |
371 ms |
17220 KB |
Output is correct |
49 |
Correct |
374 ms |
17204 KB |
Output is correct |
50 |
Correct |
363 ms |
17296 KB |
Output is correct |
51 |
Correct |
363 ms |
17168 KB |
Output is correct |
52 |
Correct |
365 ms |
17228 KB |
Output is correct |
53 |
Correct |
361 ms |
17300 KB |
Output is correct |
54 |
Correct |
363 ms |
17252 KB |
Output is correct |
55 |
Correct |
369 ms |
17292 KB |
Output is correct |
56 |
Correct |
375 ms |
17280 KB |
Output is correct |
57 |
Correct |
378 ms |
17188 KB |
Output is correct |
58 |
Correct |
374 ms |
17236 KB |
Output is correct |
59 |
Correct |
364 ms |
17288 KB |
Output is correct |
60 |
Correct |
361 ms |
17284 KB |
Output is correct |
61 |
Correct |
368 ms |
17344 KB |
Output is correct |
62 |
Correct |
366 ms |
17280 KB |
Output is correct |
63 |
Correct |
366 ms |
17296 KB |
Output is correct |
64 |
Correct |
370 ms |
17432 KB |
Output is correct |
65 |
Correct |
372 ms |
17572 KB |
Output is correct |
66 |
Correct |
363 ms |
17440 KB |
Output is correct |
67 |
Correct |
365 ms |
17544 KB |
Output is correct |
68 |
Correct |
373 ms |
17500 KB |
Output is correct |
69 |
Correct |
359 ms |
17540 KB |
Output is correct |
70 |
Correct |
360 ms |
17552 KB |
Output is correct |
71 |
Correct |
361 ms |
17476 KB |
Output is correct |
72 |
Correct |
376 ms |
17628 KB |
Output is correct |
73 |
Correct |
365 ms |
17468 KB |
Output is correct |
74 |
Correct |
379 ms |
17600 KB |
Output is correct |
75 |
Correct |
369 ms |
17548 KB |
Output is correct |
76 |
Correct |
365 ms |
17604 KB |
Output is correct |
77 |
Correct |
363 ms |
17472 KB |
Output is correct |
78 |
Correct |
382 ms |
17604 KB |
Output is correct |
79 |
Correct |
367 ms |
17476 KB |
Output is correct |
80 |
Correct |
363 ms |
17548 KB |
Output is correct |
81 |
Correct |
366 ms |
17560 KB |
Output is correct |
82 |
Correct |
363 ms |
17548 KB |
Output is correct |
83 |
Correct |
383 ms |
17476 KB |
Output is correct |
84 |
Correct |
362 ms |
17528 KB |
Output is correct |