#include<bits/stdc++.h>
using namespace std;
#define int long long
int M = 62;
string chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
vector<vector<vector<int>>> cnt (11, vector<vector<int>> (M, vector<int> (M)));
vector<int> f = {0,1,2,6,24};
int cntuni(vector<int> arr){
map<int,int> cnt;
for(auto e : arr) cnt[e]++;
int res = 1;
for(auto p : cnt) res *= f[p.second];
return 24 / res;
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
map<char,int> mp;
for(int i = 0; i < M; i++) mp[chars[i]] = i;
int N; cin >> N;
set<string> seen;
for(int i = 0; i < N; i++){
string s; cin >> s;
if(seen.count(s)) continue;
cnt[s.length()][mp[s[0]]][mp[s[s.length() - 1]]]++;
seen.insert(s);
reverse(s.begin(), s.end());
if(seen.count(s)) continue;
cnt[s.length()][mp[s[0]]][mp[s[s.length() - 1]]]++;
seen.insert(s);
}
int MOD = 998244353;
int res = 0;
vector<vector<vector<vector<int>>>> ans (M, vector<vector<vector<int>>> (M, vector<vector<int>> (M, vector<int> (M, -1))));
for(int len = 3; len <= 10; len++){
vector<vector<vector<int>>> dp (M, vector<vector<int>> (M, vector<int> (M)));
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[i][j][k] += (cnt[len][i][l] * cnt[len][j][l] * cnt[len][k][l]) % MOD;
dp[i][j][k] %= MOD;
}
}
}
}
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 a = (dp[i][j][k] * dp[i][j][l] % MOD) * (dp[i][k][l] * dp[j][k][l] % MOD) % MOD;
if(ans[i][j][k][l] != -1) a*=ans[i][j][k][l];
else a *= (ans[i][j][k][l] = cntuni({i,j,k,l}));
a %= MOD;
res += a;
res %= MOD;
}
}
}
}
}
cout << res << endl;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
810 ms |
142608 KB |
Output is correct |
2 |
Correct |
834 ms |
143352 KB |
Output is correct |
3 |
Correct |
730 ms |
143352 KB |
Output is correct |
4 |
Correct |
760 ms |
143248 KB |
Output is correct |
5 |
Correct |
740 ms |
143352 KB |
Output is correct |
6 |
Correct |
741 ms |
143264 KB |
Output is correct |
7 |
Correct |
739 ms |
143208 KB |
Output is correct |
8 |
Correct |
737 ms |
143352 KB |
Output is correct |
9 |
Correct |
782 ms |
143292 KB |
Output is correct |
10 |
Correct |
762 ms |
143348 KB |
Output is correct |
11 |
Correct |
754 ms |
143356 KB |
Output is correct |
12 |
Correct |
744 ms |
143352 KB |
Output is correct |
13 |
Correct |
751 ms |
143480 KB |
Output is correct |
14 |
Correct |
736 ms |
143352 KB |
Output is correct |
15 |
Correct |
736 ms |
143352 KB |
Output is correct |
16 |
Correct |
734 ms |
143352 KB |
Output is correct |
17 |
Correct |
745 ms |
143332 KB |
Output is correct |
18 |
Correct |
746 ms |
143352 KB |
Output is correct |
19 |
Correct |
751 ms |
143224 KB |
Output is correct |
20 |
Correct |
741 ms |
143372 KB |
Output is correct |
21 |
Correct |
747 ms |
143256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
810 ms |
142608 KB |
Output is correct |
2 |
Correct |
834 ms |
143352 KB |
Output is correct |
3 |
Correct |
730 ms |
143352 KB |
Output is correct |
4 |
Correct |
760 ms |
143248 KB |
Output is correct |
5 |
Correct |
740 ms |
143352 KB |
Output is correct |
6 |
Correct |
741 ms |
143264 KB |
Output is correct |
7 |
Correct |
739 ms |
143208 KB |
Output is correct |
8 |
Correct |
737 ms |
143352 KB |
Output is correct |
9 |
Correct |
782 ms |
143292 KB |
Output is correct |
10 |
Correct |
762 ms |
143348 KB |
Output is correct |
11 |
Correct |
754 ms |
143356 KB |
Output is correct |
12 |
Correct |
744 ms |
143352 KB |
Output is correct |
13 |
Correct |
751 ms |
143480 KB |
Output is correct |
14 |
Correct |
736 ms |
143352 KB |
Output is correct |
15 |
Correct |
736 ms |
143352 KB |
Output is correct |
16 |
Correct |
734 ms |
143352 KB |
Output is correct |
17 |
Correct |
745 ms |
143332 KB |
Output is correct |
18 |
Correct |
746 ms |
143352 KB |
Output is correct |
19 |
Correct |
751 ms |
143224 KB |
Output is correct |
20 |
Correct |
741 ms |
143372 KB |
Output is correct |
21 |
Correct |
747 ms |
143256 KB |
Output is correct |
22 |
Correct |
801 ms |
143932 KB |
Output is correct |
23 |
Correct |
758 ms |
143800 KB |
Output is correct |
24 |
Correct |
752 ms |
144120 KB |
Output is correct |
25 |
Correct |
754 ms |
143864 KB |
Output is correct |
26 |
Correct |
759 ms |
143928 KB |
Output is correct |
27 |
Correct |
754 ms |
143944 KB |
Output is correct |
28 |
Correct |
759 ms |
143992 KB |
Output is correct |
29 |
Correct |
747 ms |
143968 KB |
Output is correct |
30 |
Correct |
784 ms |
143992 KB |
Output is correct |
31 |
Correct |
752 ms |
143992 KB |
Output is correct |
32 |
Correct |
755 ms |
143964 KB |
Output is correct |
33 |
Correct |
773 ms |
143736 KB |
Output is correct |
34 |
Correct |
737 ms |
143912 KB |
Output is correct |
35 |
Correct |
776 ms |
143992 KB |
Output is correct |
36 |
Correct |
765 ms |
143768 KB |
Output is correct |
37 |
Correct |
761 ms |
143864 KB |
Output is correct |
38 |
Correct |
767 ms |
143864 KB |
Output is correct |
39 |
Correct |
777 ms |
143928 KB |
Output is correct |
40 |
Correct |
756 ms |
143864 KB |
Output is correct |
41 |
Correct |
751 ms |
143864 KB |
Output is correct |
42 |
Correct |
754 ms |
143992 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
810 ms |
142608 KB |
Output is correct |
2 |
Correct |
834 ms |
143352 KB |
Output is correct |
3 |
Correct |
730 ms |
143352 KB |
Output is correct |
4 |
Correct |
760 ms |
143248 KB |
Output is correct |
5 |
Correct |
740 ms |
143352 KB |
Output is correct |
6 |
Correct |
741 ms |
143264 KB |
Output is correct |
7 |
Correct |
739 ms |
143208 KB |
Output is correct |
8 |
Correct |
737 ms |
143352 KB |
Output is correct |
9 |
Correct |
782 ms |
143292 KB |
Output is correct |
10 |
Correct |
762 ms |
143348 KB |
Output is correct |
11 |
Correct |
754 ms |
143356 KB |
Output is correct |
12 |
Correct |
744 ms |
143352 KB |
Output is correct |
13 |
Correct |
751 ms |
143480 KB |
Output is correct |
14 |
Correct |
736 ms |
143352 KB |
Output is correct |
15 |
Correct |
736 ms |
143352 KB |
Output is correct |
16 |
Correct |
734 ms |
143352 KB |
Output is correct |
17 |
Correct |
745 ms |
143332 KB |
Output is correct |
18 |
Correct |
746 ms |
143352 KB |
Output is correct |
19 |
Correct |
751 ms |
143224 KB |
Output is correct |
20 |
Correct |
741 ms |
143372 KB |
Output is correct |
21 |
Correct |
747 ms |
143256 KB |
Output is correct |
22 |
Correct |
801 ms |
143932 KB |
Output is correct |
23 |
Correct |
758 ms |
143800 KB |
Output is correct |
24 |
Correct |
752 ms |
144120 KB |
Output is correct |
25 |
Correct |
754 ms |
143864 KB |
Output is correct |
26 |
Correct |
759 ms |
143928 KB |
Output is correct |
27 |
Correct |
754 ms |
143944 KB |
Output is correct |
28 |
Correct |
759 ms |
143992 KB |
Output is correct |
29 |
Correct |
747 ms |
143968 KB |
Output is correct |
30 |
Correct |
784 ms |
143992 KB |
Output is correct |
31 |
Correct |
752 ms |
143992 KB |
Output is correct |
32 |
Correct |
755 ms |
143964 KB |
Output is correct |
33 |
Correct |
773 ms |
143736 KB |
Output is correct |
34 |
Correct |
737 ms |
143912 KB |
Output is correct |
35 |
Correct |
776 ms |
143992 KB |
Output is correct |
36 |
Correct |
765 ms |
143768 KB |
Output is correct |
37 |
Correct |
761 ms |
143864 KB |
Output is correct |
38 |
Correct |
767 ms |
143864 KB |
Output is correct |
39 |
Correct |
777 ms |
143928 KB |
Output is correct |
40 |
Correct |
756 ms |
143864 KB |
Output is correct |
41 |
Correct |
751 ms |
143864 KB |
Output is correct |
42 |
Correct |
754 ms |
143992 KB |
Output is correct |
43 |
Correct |
758 ms |
144152 KB |
Output is correct |
44 |
Correct |
755 ms |
144120 KB |
Output is correct |
45 |
Correct |
748 ms |
144120 KB |
Output is correct |
46 |
Correct |
760 ms |
143996 KB |
Output is correct |
47 |
Correct |
786 ms |
143992 KB |
Output is correct |
48 |
Correct |
777 ms |
144088 KB |
Output is correct |
49 |
Correct |
787 ms |
144120 KB |
Output is correct |
50 |
Correct |
751 ms |
143992 KB |
Output is correct |
51 |
Correct |
794 ms |
144140 KB |
Output is correct |
52 |
Correct |
749 ms |
144152 KB |
Output is correct |
53 |
Correct |
761 ms |
144064 KB |
Output is correct |
54 |
Correct |
772 ms |
144120 KB |
Output is correct |
55 |
Correct |
762 ms |
144248 KB |
Output is correct |
56 |
Correct |
771 ms |
143992 KB |
Output is correct |
57 |
Correct |
784 ms |
144120 KB |
Output is correct |
58 |
Correct |
770 ms |
144260 KB |
Output is correct |
59 |
Correct |
763 ms |
144120 KB |
Output is correct |
60 |
Correct |
786 ms |
144048 KB |
Output is correct |
61 |
Correct |
773 ms |
144120 KB |
Output is correct |
62 |
Correct |
768 ms |
144120 KB |
Output is correct |
63 |
Correct |
772 ms |
144120 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
810 ms |
142608 KB |
Output is correct |
2 |
Correct |
834 ms |
143352 KB |
Output is correct |
3 |
Correct |
730 ms |
143352 KB |
Output is correct |
4 |
Correct |
760 ms |
143248 KB |
Output is correct |
5 |
Correct |
740 ms |
143352 KB |
Output is correct |
6 |
Correct |
741 ms |
143264 KB |
Output is correct |
7 |
Correct |
739 ms |
143208 KB |
Output is correct |
8 |
Correct |
737 ms |
143352 KB |
Output is correct |
9 |
Correct |
782 ms |
143292 KB |
Output is correct |
10 |
Correct |
762 ms |
143348 KB |
Output is correct |
11 |
Correct |
754 ms |
143356 KB |
Output is correct |
12 |
Correct |
744 ms |
143352 KB |
Output is correct |
13 |
Correct |
751 ms |
143480 KB |
Output is correct |
14 |
Correct |
736 ms |
143352 KB |
Output is correct |
15 |
Correct |
736 ms |
143352 KB |
Output is correct |
16 |
Correct |
734 ms |
143352 KB |
Output is correct |
17 |
Correct |
745 ms |
143332 KB |
Output is correct |
18 |
Correct |
746 ms |
143352 KB |
Output is correct |
19 |
Correct |
751 ms |
143224 KB |
Output is correct |
20 |
Correct |
741 ms |
143372 KB |
Output is correct |
21 |
Correct |
747 ms |
143256 KB |
Output is correct |
22 |
Correct |
801 ms |
143932 KB |
Output is correct |
23 |
Correct |
758 ms |
143800 KB |
Output is correct |
24 |
Correct |
752 ms |
144120 KB |
Output is correct |
25 |
Correct |
754 ms |
143864 KB |
Output is correct |
26 |
Correct |
759 ms |
143928 KB |
Output is correct |
27 |
Correct |
754 ms |
143944 KB |
Output is correct |
28 |
Correct |
759 ms |
143992 KB |
Output is correct |
29 |
Correct |
747 ms |
143968 KB |
Output is correct |
30 |
Correct |
784 ms |
143992 KB |
Output is correct |
31 |
Correct |
752 ms |
143992 KB |
Output is correct |
32 |
Correct |
755 ms |
143964 KB |
Output is correct |
33 |
Correct |
773 ms |
143736 KB |
Output is correct |
34 |
Correct |
737 ms |
143912 KB |
Output is correct |
35 |
Correct |
776 ms |
143992 KB |
Output is correct |
36 |
Correct |
765 ms |
143768 KB |
Output is correct |
37 |
Correct |
761 ms |
143864 KB |
Output is correct |
38 |
Correct |
767 ms |
143864 KB |
Output is correct |
39 |
Correct |
777 ms |
143928 KB |
Output is correct |
40 |
Correct |
756 ms |
143864 KB |
Output is correct |
41 |
Correct |
751 ms |
143864 KB |
Output is correct |
42 |
Correct |
754 ms |
143992 KB |
Output is correct |
43 |
Correct |
758 ms |
144152 KB |
Output is correct |
44 |
Correct |
755 ms |
144120 KB |
Output is correct |
45 |
Correct |
748 ms |
144120 KB |
Output is correct |
46 |
Correct |
760 ms |
143996 KB |
Output is correct |
47 |
Correct |
786 ms |
143992 KB |
Output is correct |
48 |
Correct |
777 ms |
144088 KB |
Output is correct |
49 |
Correct |
787 ms |
144120 KB |
Output is correct |
50 |
Correct |
751 ms |
143992 KB |
Output is correct |
51 |
Correct |
794 ms |
144140 KB |
Output is correct |
52 |
Correct |
749 ms |
144152 KB |
Output is correct |
53 |
Correct |
761 ms |
144064 KB |
Output is correct |
54 |
Correct |
772 ms |
144120 KB |
Output is correct |
55 |
Correct |
762 ms |
144248 KB |
Output is correct |
56 |
Correct |
771 ms |
143992 KB |
Output is correct |
57 |
Correct |
784 ms |
144120 KB |
Output is correct |
58 |
Correct |
770 ms |
144260 KB |
Output is correct |
59 |
Correct |
763 ms |
144120 KB |
Output is correct |
60 |
Correct |
786 ms |
144048 KB |
Output is correct |
61 |
Correct |
773 ms |
144120 KB |
Output is correct |
62 |
Correct |
768 ms |
144120 KB |
Output is correct |
63 |
Correct |
772 ms |
144120 KB |
Output is correct |
64 |
Correct |
777 ms |
144376 KB |
Output is correct |
65 |
Correct |
779 ms |
144224 KB |
Output is correct |
66 |
Correct |
797 ms |
144248 KB |
Output is correct |
67 |
Correct |
798 ms |
144272 KB |
Output is correct |
68 |
Correct |
860 ms |
144544 KB |
Output is correct |
69 |
Correct |
811 ms |
144400 KB |
Output is correct |
70 |
Correct |
834 ms |
144296 KB |
Output is correct |
71 |
Correct |
777 ms |
144236 KB |
Output is correct |
72 |
Correct |
843 ms |
144296 KB |
Output is correct |
73 |
Correct |
800 ms |
144376 KB |
Output is correct |
74 |
Correct |
845 ms |
144312 KB |
Output is correct |
75 |
Correct |
763 ms |
144284 KB |
Output is correct |
76 |
Correct |
815 ms |
144244 KB |
Output is correct |
77 |
Correct |
754 ms |
144340 KB |
Output is correct |
78 |
Correct |
770 ms |
144248 KB |
Output is correct |
79 |
Correct |
761 ms |
144248 KB |
Output is correct |
80 |
Correct |
797 ms |
144192 KB |
Output is correct |
81 |
Correct |
822 ms |
144248 KB |
Output is correct |
82 |
Correct |
773 ms |
144252 KB |
Output is correct |
83 |
Correct |
817 ms |
144376 KB |
Output is correct |
84 |
Correct |
742 ms |
144288 KB |
Output is correct |