#include <iostream>
#include <string>
#include <set>
#include <vector>
#include <algorithm>
using namespace std;
constexpr int M = 62;
constexpr int L = 8;
constexpr int MOD = 998244353;
typedef long long ll;
int Q[L][M][M];
int DP[L][M][M][M];
int id(char c) {
if (c >= 'a' && c <= 'z') {
return c - 'a';
} else if (c >= 'A' && c <= 'Z') {
return c - 'A' + 26;
} else {
return c - '0' + 52;
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int N; cin >> N;
set<string> W;
for (int i = 0; i < N; i++) {
string S; cin >> S;
W.insert(S);
reverse(S.begin(),S.end());
W.insert(S);
}
for (const string&w: W) {
Q[w.size()-3][id(w[0])][id(w.back())]++;
}
for (int s = 0; s < L; s++) {
for (int i = 0; i < M; i++) {
for (int j = i; j < M; j++) {
for (int k = j; k < M; k++) {
for (int l = 0; l < M; l++) {
DP[s][i][j][k] += ( (ll)Q[s][i][l] * (ll)Q[s][j][l] * (ll)Q[s][k][l] ) % MOD;
if (DP[s][i][j][k] >= MOD) DP[s][i][j][k] -= MOD;
}
}
}
}
}
vector<int> Mul{24, 12, 12, 4, 12, 6, 4, 1};
ll ans = 0;
for (int s = 0; s < L; s++) {
for (int i = 0; i < M; i++) {
for (int j = i; j < M; j++) {
for (int k = j; k < M; k++) {
for (int l = k; l < M; l++) {
int q = (i==j)<<2 | (j==k)<<1 | (k==l);
ans += ((ll)DP[s][i][j][k] * (ll)DP[s][i][j][l] % MOD) * ((ll)DP[s][i][k][l] * (ll)DP[s][j][k][l] % MOD) % MOD * Mul[q];
}
}
}
}
}
cout << ans % MOD << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
231 ms |
21100 KB |
Output is correct |
2 |
Correct |
213 ms |
21212 KB |
Output is correct |
3 |
Correct |
218 ms |
21040 KB |
Output is correct |
4 |
Correct |
231 ms |
21224 KB |
Output is correct |
5 |
Correct |
222 ms |
21056 KB |
Output is correct |
6 |
Correct |
215 ms |
21004 KB |
Output is correct |
7 |
Correct |
222 ms |
21272 KB |
Output is correct |
8 |
Correct |
230 ms |
21132 KB |
Output is correct |
9 |
Correct |
234 ms |
21036 KB |
Output is correct |
10 |
Correct |
229 ms |
21132 KB |
Output is correct |
11 |
Correct |
231 ms |
21120 KB |
Output is correct |
12 |
Correct |
266 ms |
21112 KB |
Output is correct |
13 |
Correct |
237 ms |
21132 KB |
Output is correct |
14 |
Correct |
208 ms |
21012 KB |
Output is correct |
15 |
Correct |
226 ms |
21124 KB |
Output is correct |
16 |
Correct |
222 ms |
21004 KB |
Output is correct |
17 |
Correct |
235 ms |
21096 KB |
Output is correct |
18 |
Correct |
232 ms |
21116 KB |
Output is correct |
19 |
Correct |
217 ms |
21092 KB |
Output is correct |
20 |
Correct |
211 ms |
21156 KB |
Output is correct |
21 |
Correct |
260 ms |
21112 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
231 ms |
21100 KB |
Output is correct |
2 |
Correct |
213 ms |
21212 KB |
Output is correct |
3 |
Correct |
218 ms |
21040 KB |
Output is correct |
4 |
Correct |
231 ms |
21224 KB |
Output is correct |
5 |
Correct |
222 ms |
21056 KB |
Output is correct |
6 |
Correct |
215 ms |
21004 KB |
Output is correct |
7 |
Correct |
222 ms |
21272 KB |
Output is correct |
8 |
Correct |
230 ms |
21132 KB |
Output is correct |
9 |
Correct |
234 ms |
21036 KB |
Output is correct |
10 |
Correct |
229 ms |
21132 KB |
Output is correct |
11 |
Correct |
231 ms |
21120 KB |
Output is correct |
12 |
Correct |
266 ms |
21112 KB |
Output is correct |
13 |
Correct |
237 ms |
21132 KB |
Output is correct |
14 |
Correct |
208 ms |
21012 KB |
Output is correct |
15 |
Correct |
226 ms |
21124 KB |
Output is correct |
16 |
Correct |
222 ms |
21004 KB |
Output is correct |
17 |
Correct |
235 ms |
21096 KB |
Output is correct |
18 |
Correct |
232 ms |
21116 KB |
Output is correct |
19 |
Correct |
217 ms |
21092 KB |
Output is correct |
20 |
Correct |
211 ms |
21156 KB |
Output is correct |
21 |
Correct |
260 ms |
21112 KB |
Output is correct |
22 |
Correct |
213 ms |
21680 KB |
Output is correct |
23 |
Correct |
234 ms |
21712 KB |
Output is correct |
24 |
Correct |
256 ms |
21624 KB |
Output is correct |
25 |
Correct |
227 ms |
21648 KB |
Output is correct |
26 |
Correct |
225 ms |
21676 KB |
Output is correct |
27 |
Correct |
272 ms |
21724 KB |
Output is correct |
28 |
Correct |
249 ms |
21712 KB |
Output is correct |
29 |
Correct |
238 ms |
21660 KB |
Output is correct |
30 |
Correct |
240 ms |
21720 KB |
Output is correct |
31 |
Correct |
227 ms |
21592 KB |
Output is correct |
32 |
Correct |
233 ms |
21692 KB |
Output is correct |
33 |
Correct |
238 ms |
21700 KB |
Output is correct |
34 |
Correct |
261 ms |
21692 KB |
Output is correct |
35 |
Correct |
257 ms |
21712 KB |
Output is correct |
36 |
Correct |
227 ms |
21708 KB |
Output is correct |
37 |
Correct |
247 ms |
21708 KB |
Output is correct |
38 |
Correct |
240 ms |
21704 KB |
Output is correct |
39 |
Correct |
222 ms |
21708 KB |
Output is correct |
40 |
Correct |
238 ms |
21700 KB |
Output is correct |
41 |
Correct |
232 ms |
21664 KB |
Output is correct |
42 |
Correct |
227 ms |
21756 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
231 ms |
21100 KB |
Output is correct |
2 |
Correct |
213 ms |
21212 KB |
Output is correct |
3 |
Correct |
218 ms |
21040 KB |
Output is correct |
4 |
Correct |
231 ms |
21224 KB |
Output is correct |
5 |
Correct |
222 ms |
21056 KB |
Output is correct |
6 |
Correct |
215 ms |
21004 KB |
Output is correct |
7 |
Correct |
222 ms |
21272 KB |
Output is correct |
8 |
Correct |
230 ms |
21132 KB |
Output is correct |
9 |
Correct |
234 ms |
21036 KB |
Output is correct |
10 |
Correct |
229 ms |
21132 KB |
Output is correct |
11 |
Correct |
231 ms |
21120 KB |
Output is correct |
12 |
Correct |
266 ms |
21112 KB |
Output is correct |
13 |
Correct |
237 ms |
21132 KB |
Output is correct |
14 |
Correct |
208 ms |
21012 KB |
Output is correct |
15 |
Correct |
226 ms |
21124 KB |
Output is correct |
16 |
Correct |
222 ms |
21004 KB |
Output is correct |
17 |
Correct |
235 ms |
21096 KB |
Output is correct |
18 |
Correct |
232 ms |
21116 KB |
Output is correct |
19 |
Correct |
217 ms |
21092 KB |
Output is correct |
20 |
Correct |
211 ms |
21156 KB |
Output is correct |
21 |
Correct |
260 ms |
21112 KB |
Output is correct |
22 |
Correct |
213 ms |
21680 KB |
Output is correct |
23 |
Correct |
234 ms |
21712 KB |
Output is correct |
24 |
Correct |
256 ms |
21624 KB |
Output is correct |
25 |
Correct |
227 ms |
21648 KB |
Output is correct |
26 |
Correct |
225 ms |
21676 KB |
Output is correct |
27 |
Correct |
272 ms |
21724 KB |
Output is correct |
28 |
Correct |
249 ms |
21712 KB |
Output is correct |
29 |
Correct |
238 ms |
21660 KB |
Output is correct |
30 |
Correct |
240 ms |
21720 KB |
Output is correct |
31 |
Correct |
227 ms |
21592 KB |
Output is correct |
32 |
Correct |
233 ms |
21692 KB |
Output is correct |
33 |
Correct |
238 ms |
21700 KB |
Output is correct |
34 |
Correct |
261 ms |
21692 KB |
Output is correct |
35 |
Correct |
257 ms |
21712 KB |
Output is correct |
36 |
Correct |
227 ms |
21708 KB |
Output is correct |
37 |
Correct |
247 ms |
21708 KB |
Output is correct |
38 |
Correct |
240 ms |
21704 KB |
Output is correct |
39 |
Correct |
222 ms |
21708 KB |
Output is correct |
40 |
Correct |
238 ms |
21700 KB |
Output is correct |
41 |
Correct |
232 ms |
21664 KB |
Output is correct |
42 |
Correct |
227 ms |
21756 KB |
Output is correct |
43 |
Correct |
275 ms |
21956 KB |
Output is correct |
44 |
Correct |
247 ms |
22024 KB |
Output is correct |
45 |
Correct |
240 ms |
21940 KB |
Output is correct |
46 |
Correct |
270 ms |
21928 KB |
Output is correct |
47 |
Correct |
226 ms |
21892 KB |
Output is correct |
48 |
Correct |
232 ms |
21940 KB |
Output is correct |
49 |
Correct |
217 ms |
21896 KB |
Output is correct |
50 |
Correct |
220 ms |
22144 KB |
Output is correct |
51 |
Correct |
211 ms |
21848 KB |
Output is correct |
52 |
Correct |
217 ms |
21840 KB |
Output is correct |
53 |
Correct |
230 ms |
21960 KB |
Output is correct |
54 |
Correct |
220 ms |
21904 KB |
Output is correct |
55 |
Correct |
231 ms |
21892 KB |
Output is correct |
56 |
Correct |
253 ms |
22040 KB |
Output is correct |
57 |
Correct |
236 ms |
21924 KB |
Output is correct |
58 |
Correct |
237 ms |
21912 KB |
Output is correct |
59 |
Correct |
243 ms |
21880 KB |
Output is correct |
60 |
Correct |
213 ms |
21840 KB |
Output is correct |
61 |
Correct |
212 ms |
22036 KB |
Output is correct |
62 |
Correct |
231 ms |
21948 KB |
Output is correct |
63 |
Correct |
217 ms |
21840 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
231 ms |
21100 KB |
Output is correct |
2 |
Correct |
213 ms |
21212 KB |
Output is correct |
3 |
Correct |
218 ms |
21040 KB |
Output is correct |
4 |
Correct |
231 ms |
21224 KB |
Output is correct |
5 |
Correct |
222 ms |
21056 KB |
Output is correct |
6 |
Correct |
215 ms |
21004 KB |
Output is correct |
7 |
Correct |
222 ms |
21272 KB |
Output is correct |
8 |
Correct |
230 ms |
21132 KB |
Output is correct |
9 |
Correct |
234 ms |
21036 KB |
Output is correct |
10 |
Correct |
229 ms |
21132 KB |
Output is correct |
11 |
Correct |
231 ms |
21120 KB |
Output is correct |
12 |
Correct |
266 ms |
21112 KB |
Output is correct |
13 |
Correct |
237 ms |
21132 KB |
Output is correct |
14 |
Correct |
208 ms |
21012 KB |
Output is correct |
15 |
Correct |
226 ms |
21124 KB |
Output is correct |
16 |
Correct |
222 ms |
21004 KB |
Output is correct |
17 |
Correct |
235 ms |
21096 KB |
Output is correct |
18 |
Correct |
232 ms |
21116 KB |
Output is correct |
19 |
Correct |
217 ms |
21092 KB |
Output is correct |
20 |
Correct |
211 ms |
21156 KB |
Output is correct |
21 |
Correct |
260 ms |
21112 KB |
Output is correct |
22 |
Correct |
213 ms |
21680 KB |
Output is correct |
23 |
Correct |
234 ms |
21712 KB |
Output is correct |
24 |
Correct |
256 ms |
21624 KB |
Output is correct |
25 |
Correct |
227 ms |
21648 KB |
Output is correct |
26 |
Correct |
225 ms |
21676 KB |
Output is correct |
27 |
Correct |
272 ms |
21724 KB |
Output is correct |
28 |
Correct |
249 ms |
21712 KB |
Output is correct |
29 |
Correct |
238 ms |
21660 KB |
Output is correct |
30 |
Correct |
240 ms |
21720 KB |
Output is correct |
31 |
Correct |
227 ms |
21592 KB |
Output is correct |
32 |
Correct |
233 ms |
21692 KB |
Output is correct |
33 |
Correct |
238 ms |
21700 KB |
Output is correct |
34 |
Correct |
261 ms |
21692 KB |
Output is correct |
35 |
Correct |
257 ms |
21712 KB |
Output is correct |
36 |
Correct |
227 ms |
21708 KB |
Output is correct |
37 |
Correct |
247 ms |
21708 KB |
Output is correct |
38 |
Correct |
240 ms |
21704 KB |
Output is correct |
39 |
Correct |
222 ms |
21708 KB |
Output is correct |
40 |
Correct |
238 ms |
21700 KB |
Output is correct |
41 |
Correct |
232 ms |
21664 KB |
Output is correct |
42 |
Correct |
227 ms |
21756 KB |
Output is correct |
43 |
Correct |
275 ms |
21956 KB |
Output is correct |
44 |
Correct |
247 ms |
22024 KB |
Output is correct |
45 |
Correct |
240 ms |
21940 KB |
Output is correct |
46 |
Correct |
270 ms |
21928 KB |
Output is correct |
47 |
Correct |
226 ms |
21892 KB |
Output is correct |
48 |
Correct |
232 ms |
21940 KB |
Output is correct |
49 |
Correct |
217 ms |
21896 KB |
Output is correct |
50 |
Correct |
220 ms |
22144 KB |
Output is correct |
51 |
Correct |
211 ms |
21848 KB |
Output is correct |
52 |
Correct |
217 ms |
21840 KB |
Output is correct |
53 |
Correct |
230 ms |
21960 KB |
Output is correct |
54 |
Correct |
220 ms |
21904 KB |
Output is correct |
55 |
Correct |
231 ms |
21892 KB |
Output is correct |
56 |
Correct |
253 ms |
22040 KB |
Output is correct |
57 |
Correct |
236 ms |
21924 KB |
Output is correct |
58 |
Correct |
237 ms |
21912 KB |
Output is correct |
59 |
Correct |
243 ms |
21880 KB |
Output is correct |
60 |
Correct |
213 ms |
21840 KB |
Output is correct |
61 |
Correct |
212 ms |
22036 KB |
Output is correct |
62 |
Correct |
231 ms |
21948 KB |
Output is correct |
63 |
Correct |
217 ms |
21840 KB |
Output is correct |
64 |
Correct |
215 ms |
22112 KB |
Output is correct |
65 |
Correct |
231 ms |
22116 KB |
Output is correct |
66 |
Correct |
213 ms |
22160 KB |
Output is correct |
67 |
Correct |
235 ms |
22220 KB |
Output is correct |
68 |
Correct |
215 ms |
22184 KB |
Output is correct |
69 |
Correct |
222 ms |
22092 KB |
Output is correct |
70 |
Correct |
240 ms |
22188 KB |
Output is correct |
71 |
Correct |
231 ms |
22180 KB |
Output is correct |
72 |
Correct |
224 ms |
22180 KB |
Output is correct |
73 |
Correct |
215 ms |
22240 KB |
Output is correct |
74 |
Correct |
221 ms |
22092 KB |
Output is correct |
75 |
Correct |
223 ms |
22096 KB |
Output is correct |
76 |
Correct |
248 ms |
22172 KB |
Output is correct |
77 |
Correct |
219 ms |
22112 KB |
Output is correct |
78 |
Correct |
211 ms |
22128 KB |
Output is correct |
79 |
Correct |
218 ms |
22348 KB |
Output is correct |
80 |
Correct |
215 ms |
22172 KB |
Output is correct |
81 |
Correct |
239 ms |
22160 KB |
Output is correct |
82 |
Correct |
222 ms |
22304 KB |
Output is correct |
83 |
Correct |
228 ms |
22152 KB |
Output is correct |
84 |
Correct |
215 ms |
22068 KB |
Output is correct |