#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define all(x) (x).begin(),(x).end()
#define X first
#define Y second
#define sep ' '
#define endl '\n'
#define debug(x) cerr << #x << ": " << x << endl;
constexpr ll MAXN = 1e6 + 10;
constexpr ll MAXM = 26 + 26;
constexpr ll MOD = 998244353;
inline int f(char c) {
if (c >= 'a' && c <= 'z') return c - 'a';
else if (c >= 'A' && c <= 'Z') return c - 'A' + 26;
return c - '0' + 26 + 26;
}
ll F[MAXM][MAXM], T[MAXM][MAXM][MAXM], ans;
int n, nxt[MAXN][MAXM], sz = 0;
vector<string> vec[MAXM];
inline bool add(string s) {
int v = 0;
bool flag = false;
for (char c : s) {
if (!nxt[v][f(c)]) {
flag = true;
nxt[v][f(c)] = ++sz;
}
v = nxt[v][f(c)];
}
return flag;
}
inline void solve(int len) {
memset(F, 0, sizeof F);
memset(T, 0, sizeof T);
for (int i = 0; i <= sz; i++)
memset(nxt[i], 0, sizeof nxt[i]);
sz = 0;
for (string s : vec[len])
if (add(s))
F[f(s.front())][f(s.back())]++;
for (int i = 0; i < MAXM; i++)
for (int j = 0; j < MAXM; j++)
for (int k = 0; k < MAXM; k++)
for (int a = 0; a < MAXM; a++)
T[i][j][k] = (T[i][j][k] + F[a][i] * F[a][j] * F[a][k]) % MOD;
for (int a = 0; a < MAXM; a++)
for (int b = 0; b < MAXM; b++)
for (int c = 0; c < MAXM; c++)
for (int d = 0; d < MAXM; d++)
ans = (ans + T[a][b][c] * T[a][b][d] % MOD * T[a][c][d] % MOD * T[b][c][d]) % MOD;
}
int main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
int t;
cin >> t;
while (t--) {
string s;
cin >> s;
vec[s.size()].push_back(s);
reverse(all(s));
vec[s.size()].push_back(s);
}
for (int i = 3; i <= 10; i++)
solve(i);
cout << ans << endl;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
557 ms |
46168 KB |
Output is correct |
2 |
Correct |
555 ms |
45936 KB |
Output is correct |
3 |
Correct |
553 ms |
46064 KB |
Output is correct |
4 |
Correct |
558 ms |
46136 KB |
Output is correct |
5 |
Correct |
555 ms |
45940 KB |
Output is correct |
6 |
Correct |
556 ms |
45540 KB |
Output is correct |
7 |
Correct |
556 ms |
45772 KB |
Output is correct |
8 |
Correct |
555 ms |
45640 KB |
Output is correct |
9 |
Correct |
551 ms |
45540 KB |
Output is correct |
10 |
Correct |
567 ms |
45916 KB |
Output is correct |
11 |
Correct |
559 ms |
45996 KB |
Output is correct |
12 |
Correct |
549 ms |
45848 KB |
Output is correct |
13 |
Correct |
562 ms |
45968 KB |
Output is correct |
14 |
Correct |
569 ms |
45576 KB |
Output is correct |
15 |
Correct |
562 ms |
45304 KB |
Output is correct |
16 |
Correct |
554 ms |
45652 KB |
Output is correct |
17 |
Correct |
557 ms |
45744 KB |
Output is correct |
18 |
Correct |
553 ms |
45696 KB |
Output is correct |
19 |
Correct |
560 ms |
45548 KB |
Output is correct |
20 |
Correct |
555 ms |
45716 KB |
Output is correct |
21 |
Correct |
552 ms |
45648 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
557 ms |
46168 KB |
Output is correct |
2 |
Correct |
555 ms |
45936 KB |
Output is correct |
3 |
Correct |
553 ms |
46064 KB |
Output is correct |
4 |
Correct |
558 ms |
46136 KB |
Output is correct |
5 |
Correct |
555 ms |
45940 KB |
Output is correct |
6 |
Correct |
556 ms |
45540 KB |
Output is correct |
7 |
Correct |
556 ms |
45772 KB |
Output is correct |
8 |
Correct |
555 ms |
45640 KB |
Output is correct |
9 |
Correct |
551 ms |
45540 KB |
Output is correct |
10 |
Correct |
567 ms |
45916 KB |
Output is correct |
11 |
Correct |
559 ms |
45996 KB |
Output is correct |
12 |
Correct |
549 ms |
45848 KB |
Output is correct |
13 |
Correct |
562 ms |
45968 KB |
Output is correct |
14 |
Correct |
569 ms |
45576 KB |
Output is correct |
15 |
Correct |
562 ms |
45304 KB |
Output is correct |
16 |
Correct |
554 ms |
45652 KB |
Output is correct |
17 |
Correct |
557 ms |
45744 KB |
Output is correct |
18 |
Correct |
553 ms |
45696 KB |
Output is correct |
19 |
Correct |
560 ms |
45548 KB |
Output is correct |
20 |
Correct |
555 ms |
45716 KB |
Output is correct |
21 |
Correct |
552 ms |
45648 KB |
Output is correct |
22 |
Correct |
562 ms |
47164 KB |
Output is correct |
23 |
Correct |
565 ms |
47156 KB |
Output is correct |
24 |
Correct |
571 ms |
47252 KB |
Output is correct |
25 |
Correct |
558 ms |
47540 KB |
Output is correct |
26 |
Correct |
567 ms |
47024 KB |
Output is correct |
27 |
Correct |
568 ms |
47596 KB |
Output is correct |
28 |
Correct |
562 ms |
47520 KB |
Output is correct |
29 |
Correct |
565 ms |
47256 KB |
Output is correct |
30 |
Correct |
563 ms |
47756 KB |
Output is correct |
31 |
Correct |
556 ms |
47576 KB |
Output is correct |
32 |
Correct |
565 ms |
47504 KB |
Output is correct |
33 |
Correct |
561 ms |
47432 KB |
Output is correct |
34 |
Correct |
558 ms |
47656 KB |
Output is correct |
35 |
Correct |
558 ms |
47112 KB |
Output is correct |
36 |
Correct |
560 ms |
47188 KB |
Output is correct |
37 |
Correct |
553 ms |
47568 KB |
Output is correct |
38 |
Correct |
564 ms |
47348 KB |
Output is correct |
39 |
Correct |
562 ms |
47260 KB |
Output is correct |
40 |
Correct |
556 ms |
47452 KB |
Output is correct |
41 |
Correct |
556 ms |
47500 KB |
Output is correct |
42 |
Correct |
569 ms |
46948 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
557 ms |
46168 KB |
Output is correct |
2 |
Correct |
555 ms |
45936 KB |
Output is correct |
3 |
Correct |
553 ms |
46064 KB |
Output is correct |
4 |
Correct |
558 ms |
46136 KB |
Output is correct |
5 |
Correct |
555 ms |
45940 KB |
Output is correct |
6 |
Correct |
556 ms |
45540 KB |
Output is correct |
7 |
Correct |
556 ms |
45772 KB |
Output is correct |
8 |
Correct |
555 ms |
45640 KB |
Output is correct |
9 |
Correct |
551 ms |
45540 KB |
Output is correct |
10 |
Correct |
567 ms |
45916 KB |
Output is correct |
11 |
Correct |
559 ms |
45996 KB |
Output is correct |
12 |
Correct |
549 ms |
45848 KB |
Output is correct |
13 |
Correct |
562 ms |
45968 KB |
Output is correct |
14 |
Correct |
569 ms |
45576 KB |
Output is correct |
15 |
Correct |
562 ms |
45304 KB |
Output is correct |
16 |
Correct |
554 ms |
45652 KB |
Output is correct |
17 |
Correct |
557 ms |
45744 KB |
Output is correct |
18 |
Correct |
553 ms |
45696 KB |
Output is correct |
19 |
Correct |
560 ms |
45548 KB |
Output is correct |
20 |
Correct |
555 ms |
45716 KB |
Output is correct |
21 |
Correct |
552 ms |
45648 KB |
Output is correct |
22 |
Correct |
562 ms |
47164 KB |
Output is correct |
23 |
Correct |
565 ms |
47156 KB |
Output is correct |
24 |
Correct |
571 ms |
47252 KB |
Output is correct |
25 |
Correct |
558 ms |
47540 KB |
Output is correct |
26 |
Correct |
567 ms |
47024 KB |
Output is correct |
27 |
Correct |
568 ms |
47596 KB |
Output is correct |
28 |
Correct |
562 ms |
47520 KB |
Output is correct |
29 |
Correct |
565 ms |
47256 KB |
Output is correct |
30 |
Correct |
563 ms |
47756 KB |
Output is correct |
31 |
Correct |
556 ms |
47576 KB |
Output is correct |
32 |
Correct |
565 ms |
47504 KB |
Output is correct |
33 |
Correct |
561 ms |
47432 KB |
Output is correct |
34 |
Correct |
558 ms |
47656 KB |
Output is correct |
35 |
Correct |
558 ms |
47112 KB |
Output is correct |
36 |
Correct |
560 ms |
47188 KB |
Output is correct |
37 |
Correct |
553 ms |
47568 KB |
Output is correct |
38 |
Correct |
564 ms |
47348 KB |
Output is correct |
39 |
Correct |
562 ms |
47260 KB |
Output is correct |
40 |
Correct |
556 ms |
47452 KB |
Output is correct |
41 |
Correct |
556 ms |
47500 KB |
Output is correct |
42 |
Correct |
569 ms |
46948 KB |
Output is correct |
43 |
Correct |
579 ms |
47668 KB |
Output is correct |
44 |
Correct |
574 ms |
48144 KB |
Output is correct |
45 |
Correct |
576 ms |
48036 KB |
Output is correct |
46 |
Correct |
574 ms |
48252 KB |
Output is correct |
47 |
Correct |
576 ms |
47984 KB |
Output is correct |
48 |
Correct |
585 ms |
48912 KB |
Output is correct |
49 |
Correct |
575 ms |
48036 KB |
Output is correct |
50 |
Correct |
575 ms |
48884 KB |
Output is correct |
51 |
Correct |
574 ms |
48576 KB |
Output is correct |
52 |
Correct |
577 ms |
47916 KB |
Output is correct |
53 |
Correct |
578 ms |
47932 KB |
Output is correct |
54 |
Correct |
575 ms |
48464 KB |
Output is correct |
55 |
Correct |
584 ms |
48572 KB |
Output is correct |
56 |
Correct |
602 ms |
48116 KB |
Output is correct |
57 |
Correct |
574 ms |
48276 KB |
Output is correct |
58 |
Correct |
575 ms |
48232 KB |
Output is correct |
59 |
Correct |
576 ms |
48032 KB |
Output is correct |
60 |
Correct |
577 ms |
47976 KB |
Output is correct |
61 |
Correct |
607 ms |
48180 KB |
Output is correct |
62 |
Correct |
592 ms |
48288 KB |
Output is correct |
63 |
Correct |
591 ms |
48036 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
557 ms |
46168 KB |
Output is correct |
2 |
Correct |
555 ms |
45936 KB |
Output is correct |
3 |
Correct |
553 ms |
46064 KB |
Output is correct |
4 |
Correct |
558 ms |
46136 KB |
Output is correct |
5 |
Correct |
555 ms |
45940 KB |
Output is correct |
6 |
Correct |
556 ms |
45540 KB |
Output is correct |
7 |
Correct |
556 ms |
45772 KB |
Output is correct |
8 |
Correct |
555 ms |
45640 KB |
Output is correct |
9 |
Correct |
551 ms |
45540 KB |
Output is correct |
10 |
Correct |
567 ms |
45916 KB |
Output is correct |
11 |
Correct |
559 ms |
45996 KB |
Output is correct |
12 |
Correct |
549 ms |
45848 KB |
Output is correct |
13 |
Correct |
562 ms |
45968 KB |
Output is correct |
14 |
Correct |
569 ms |
45576 KB |
Output is correct |
15 |
Correct |
562 ms |
45304 KB |
Output is correct |
16 |
Correct |
554 ms |
45652 KB |
Output is correct |
17 |
Correct |
557 ms |
45744 KB |
Output is correct |
18 |
Correct |
553 ms |
45696 KB |
Output is correct |
19 |
Correct |
560 ms |
45548 KB |
Output is correct |
20 |
Correct |
555 ms |
45716 KB |
Output is correct |
21 |
Correct |
552 ms |
45648 KB |
Output is correct |
22 |
Correct |
562 ms |
47164 KB |
Output is correct |
23 |
Correct |
565 ms |
47156 KB |
Output is correct |
24 |
Correct |
571 ms |
47252 KB |
Output is correct |
25 |
Correct |
558 ms |
47540 KB |
Output is correct |
26 |
Correct |
567 ms |
47024 KB |
Output is correct |
27 |
Correct |
568 ms |
47596 KB |
Output is correct |
28 |
Correct |
562 ms |
47520 KB |
Output is correct |
29 |
Correct |
565 ms |
47256 KB |
Output is correct |
30 |
Correct |
563 ms |
47756 KB |
Output is correct |
31 |
Correct |
556 ms |
47576 KB |
Output is correct |
32 |
Correct |
565 ms |
47504 KB |
Output is correct |
33 |
Correct |
561 ms |
47432 KB |
Output is correct |
34 |
Correct |
558 ms |
47656 KB |
Output is correct |
35 |
Correct |
558 ms |
47112 KB |
Output is correct |
36 |
Correct |
560 ms |
47188 KB |
Output is correct |
37 |
Correct |
553 ms |
47568 KB |
Output is correct |
38 |
Correct |
564 ms |
47348 KB |
Output is correct |
39 |
Correct |
562 ms |
47260 KB |
Output is correct |
40 |
Correct |
556 ms |
47452 KB |
Output is correct |
41 |
Correct |
556 ms |
47500 KB |
Output is correct |
42 |
Correct |
569 ms |
46948 KB |
Output is correct |
43 |
Correct |
579 ms |
47668 KB |
Output is correct |
44 |
Correct |
574 ms |
48144 KB |
Output is correct |
45 |
Correct |
576 ms |
48036 KB |
Output is correct |
46 |
Correct |
574 ms |
48252 KB |
Output is correct |
47 |
Correct |
576 ms |
47984 KB |
Output is correct |
48 |
Correct |
585 ms |
48912 KB |
Output is correct |
49 |
Correct |
575 ms |
48036 KB |
Output is correct |
50 |
Correct |
575 ms |
48884 KB |
Output is correct |
51 |
Correct |
574 ms |
48576 KB |
Output is correct |
52 |
Correct |
577 ms |
47916 KB |
Output is correct |
53 |
Correct |
578 ms |
47932 KB |
Output is correct |
54 |
Correct |
575 ms |
48464 KB |
Output is correct |
55 |
Correct |
584 ms |
48572 KB |
Output is correct |
56 |
Correct |
602 ms |
48116 KB |
Output is correct |
57 |
Correct |
574 ms |
48276 KB |
Output is correct |
58 |
Correct |
575 ms |
48232 KB |
Output is correct |
59 |
Correct |
576 ms |
48032 KB |
Output is correct |
60 |
Correct |
577 ms |
47976 KB |
Output is correct |
61 |
Correct |
607 ms |
48180 KB |
Output is correct |
62 |
Correct |
592 ms |
48288 KB |
Output is correct |
63 |
Correct |
591 ms |
48036 KB |
Output is correct |
64 |
Runtime error |
645 ms |
98516 KB |
Execution killed with signal 11 |
65 |
Halted |
0 ms |
0 KB |
- |