#include <bits/stdc++.h>
using namespace std;
#define int long long
const int MOD = 998244353;
const int MAXN = 72;
const int MAXT = 11;
//Freq of two ends of and edge
int freq[MAXT][MAXN][MAXN];
//Freq of the meeting of three edges
int freq3[MAXT][MAXN][MAXN][MAXN];
int letters[MAXT];
map<char, int> comp[MAXT];
set<string> palav[MAXT];
int resp = 0;
inline int add(int a, int b) {return (a + b) % MOD;}
inline int mult(int a, int b) {return (a * b) % MOD;}
int32_t main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int N;
cin >> N;
for (int i = 1; i <= N; i++)
{
string s;
cin >> s;
palav[s.size()].insert(s);
reverse(s.begin(), s.end());
palav[s.size()].insert(s);
}
for (int i = 3; i < MAXT; i++)
{
for (auto &s : palav[i])
{
char b = s[0], f = s.back();
if (comp[i][b] == 0) comp[i][b] = ++letters[i];
if (comp[i][f] == 0) comp[i][f] = ++letters[i];
freq[i][comp[i][b]][comp[i][f]]++;
}
}
for (int t = 3; t < MAXT; t++)
{
for (int i = 1; i <= letters[t]; i++)
{
for (int j = i; j <= letters[t]; j++)
{
for (int k = j; k <= letters[t]; k++)
{
for (int x = 1; x <= letters[t]; x++)
{
freq3[t][i][j][k] = freq3[t][i][k][j] = freq3[t][j][i][k] = freq3[t][j][k][i] = freq3[t][k][i][j] = freq3[t][k][j][i] = add(freq3[t][i][j][k], mult(freq[t][i][x], mult(freq[t][j][x], freq[t][k][x])));
}
}
}
}
}
for (int t = 3; t < MAXT; t++)
{
for (int i = 1; i <= letters[t]; i++)
{
for (int j = 1; j <= letters[t]; j++)
{
for (int k = 1; k <= letters[t]; k++)
{
int ansX = freq3[t][i][j][k];
if (ansX == 0) continue;
for (int l = 1; l <= letters[t]; l++)
{
int ans = ansX;
ans = mult(ans, freq3[t][i][j][l]);
ans = mult(ans, freq3[t][i][k][l]);
ans = mult(ans, freq3[t][j][k][l]);
resp = add(resp, ans);
}
}
}
}
}
cout << resp << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
86 ms |
15160 KB |
Output is correct |
2 |
Correct |
84 ms |
15104 KB |
Output is correct |
3 |
Correct |
84 ms |
15204 KB |
Output is correct |
4 |
Correct |
84 ms |
15168 KB |
Output is correct |
5 |
Correct |
101 ms |
15136 KB |
Output is correct |
6 |
Correct |
84 ms |
15184 KB |
Output is correct |
7 |
Correct |
83 ms |
15100 KB |
Output is correct |
8 |
Correct |
85 ms |
15112 KB |
Output is correct |
9 |
Correct |
85 ms |
15156 KB |
Output is correct |
10 |
Correct |
86 ms |
15120 KB |
Output is correct |
11 |
Correct |
84 ms |
15104 KB |
Output is correct |
12 |
Correct |
84 ms |
15192 KB |
Output is correct |
13 |
Correct |
87 ms |
15096 KB |
Output is correct |
14 |
Correct |
85 ms |
15184 KB |
Output is correct |
15 |
Correct |
84 ms |
15220 KB |
Output is correct |
16 |
Correct |
84 ms |
15080 KB |
Output is correct |
17 |
Correct |
84 ms |
15136 KB |
Output is correct |
18 |
Correct |
85 ms |
15100 KB |
Output is correct |
19 |
Correct |
85 ms |
15076 KB |
Output is correct |
20 |
Correct |
87 ms |
15212 KB |
Output is correct |
21 |
Correct |
86 ms |
15156 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
86 ms |
15160 KB |
Output is correct |
2 |
Correct |
84 ms |
15104 KB |
Output is correct |
3 |
Correct |
84 ms |
15204 KB |
Output is correct |
4 |
Correct |
84 ms |
15168 KB |
Output is correct |
5 |
Correct |
101 ms |
15136 KB |
Output is correct |
6 |
Correct |
84 ms |
15184 KB |
Output is correct |
7 |
Correct |
83 ms |
15100 KB |
Output is correct |
8 |
Correct |
85 ms |
15112 KB |
Output is correct |
9 |
Correct |
85 ms |
15156 KB |
Output is correct |
10 |
Correct |
86 ms |
15120 KB |
Output is correct |
11 |
Correct |
84 ms |
15104 KB |
Output is correct |
12 |
Correct |
84 ms |
15192 KB |
Output is correct |
13 |
Correct |
87 ms |
15096 KB |
Output is correct |
14 |
Correct |
85 ms |
15184 KB |
Output is correct |
15 |
Correct |
84 ms |
15220 KB |
Output is correct |
16 |
Correct |
84 ms |
15080 KB |
Output is correct |
17 |
Correct |
84 ms |
15136 KB |
Output is correct |
18 |
Correct |
85 ms |
15100 KB |
Output is correct |
19 |
Correct |
85 ms |
15076 KB |
Output is correct |
20 |
Correct |
87 ms |
15212 KB |
Output is correct |
21 |
Correct |
86 ms |
15156 KB |
Output is correct |
22 |
Correct |
99 ms |
17100 KB |
Output is correct |
23 |
Correct |
99 ms |
17124 KB |
Output is correct |
24 |
Correct |
97 ms |
17136 KB |
Output is correct |
25 |
Correct |
97 ms |
17100 KB |
Output is correct |
26 |
Correct |
98 ms |
17108 KB |
Output is correct |
27 |
Correct |
97 ms |
17120 KB |
Output is correct |
28 |
Correct |
101 ms |
17104 KB |
Output is correct |
29 |
Correct |
99 ms |
17112 KB |
Output is correct |
30 |
Correct |
96 ms |
17168 KB |
Output is correct |
31 |
Correct |
104 ms |
17100 KB |
Output is correct |
32 |
Correct |
97 ms |
17068 KB |
Output is correct |
33 |
Correct |
96 ms |
17196 KB |
Output is correct |
34 |
Correct |
97 ms |
17096 KB |
Output is correct |
35 |
Correct |
103 ms |
17180 KB |
Output is correct |
36 |
Correct |
111 ms |
17292 KB |
Output is correct |
37 |
Correct |
96 ms |
17152 KB |
Output is correct |
38 |
Correct |
97 ms |
17192 KB |
Output is correct |
39 |
Correct |
98 ms |
17128 KB |
Output is correct |
40 |
Correct |
102 ms |
17148 KB |
Output is correct |
41 |
Correct |
118 ms |
17216 KB |
Output is correct |
42 |
Correct |
97 ms |
17184 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
86 ms |
15160 KB |
Output is correct |
2 |
Correct |
84 ms |
15104 KB |
Output is correct |
3 |
Correct |
84 ms |
15204 KB |
Output is correct |
4 |
Correct |
84 ms |
15168 KB |
Output is correct |
5 |
Correct |
101 ms |
15136 KB |
Output is correct |
6 |
Correct |
84 ms |
15184 KB |
Output is correct |
7 |
Correct |
83 ms |
15100 KB |
Output is correct |
8 |
Correct |
85 ms |
15112 KB |
Output is correct |
9 |
Correct |
85 ms |
15156 KB |
Output is correct |
10 |
Correct |
86 ms |
15120 KB |
Output is correct |
11 |
Correct |
84 ms |
15104 KB |
Output is correct |
12 |
Correct |
84 ms |
15192 KB |
Output is correct |
13 |
Correct |
87 ms |
15096 KB |
Output is correct |
14 |
Correct |
85 ms |
15184 KB |
Output is correct |
15 |
Correct |
84 ms |
15220 KB |
Output is correct |
16 |
Correct |
84 ms |
15080 KB |
Output is correct |
17 |
Correct |
84 ms |
15136 KB |
Output is correct |
18 |
Correct |
85 ms |
15100 KB |
Output is correct |
19 |
Correct |
85 ms |
15076 KB |
Output is correct |
20 |
Correct |
87 ms |
15212 KB |
Output is correct |
21 |
Correct |
86 ms |
15156 KB |
Output is correct |
22 |
Correct |
99 ms |
17100 KB |
Output is correct |
23 |
Correct |
99 ms |
17124 KB |
Output is correct |
24 |
Correct |
97 ms |
17136 KB |
Output is correct |
25 |
Correct |
97 ms |
17100 KB |
Output is correct |
26 |
Correct |
98 ms |
17108 KB |
Output is correct |
27 |
Correct |
97 ms |
17120 KB |
Output is correct |
28 |
Correct |
101 ms |
17104 KB |
Output is correct |
29 |
Correct |
99 ms |
17112 KB |
Output is correct |
30 |
Correct |
96 ms |
17168 KB |
Output is correct |
31 |
Correct |
104 ms |
17100 KB |
Output is correct |
32 |
Correct |
97 ms |
17068 KB |
Output is correct |
33 |
Correct |
96 ms |
17196 KB |
Output is correct |
34 |
Correct |
97 ms |
17096 KB |
Output is correct |
35 |
Correct |
103 ms |
17180 KB |
Output is correct |
36 |
Correct |
111 ms |
17292 KB |
Output is correct |
37 |
Correct |
96 ms |
17152 KB |
Output is correct |
38 |
Correct |
97 ms |
17192 KB |
Output is correct |
39 |
Correct |
98 ms |
17128 KB |
Output is correct |
40 |
Correct |
102 ms |
17148 KB |
Output is correct |
41 |
Correct |
118 ms |
17216 KB |
Output is correct |
42 |
Correct |
97 ms |
17184 KB |
Output is correct |
43 |
Correct |
160 ms |
21360 KB |
Output is correct |
44 |
Correct |
161 ms |
21332 KB |
Output is correct |
45 |
Correct |
166 ms |
21332 KB |
Output is correct |
46 |
Correct |
159 ms |
21392 KB |
Output is correct |
47 |
Correct |
159 ms |
21392 KB |
Output is correct |
48 |
Correct |
158 ms |
21324 KB |
Output is correct |
49 |
Correct |
168 ms |
21320 KB |
Output is correct |
50 |
Correct |
157 ms |
21404 KB |
Output is correct |
51 |
Correct |
159 ms |
21316 KB |
Output is correct |
52 |
Correct |
156 ms |
21368 KB |
Output is correct |
53 |
Correct |
167 ms |
21444 KB |
Output is correct |
54 |
Correct |
162 ms |
21368 KB |
Output is correct |
55 |
Correct |
157 ms |
21284 KB |
Output is correct |
56 |
Correct |
163 ms |
21368 KB |
Output is correct |
57 |
Correct |
158 ms |
21292 KB |
Output is correct |
58 |
Correct |
167 ms |
21396 KB |
Output is correct |
59 |
Correct |
160 ms |
21396 KB |
Output is correct |
60 |
Correct |
162 ms |
21324 KB |
Output is correct |
61 |
Correct |
158 ms |
21320 KB |
Output is correct |
62 |
Correct |
156 ms |
21280 KB |
Output is correct |
63 |
Correct |
163 ms |
21324 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
86 ms |
15160 KB |
Output is correct |
2 |
Correct |
84 ms |
15104 KB |
Output is correct |
3 |
Correct |
84 ms |
15204 KB |
Output is correct |
4 |
Correct |
84 ms |
15168 KB |
Output is correct |
5 |
Correct |
101 ms |
15136 KB |
Output is correct |
6 |
Correct |
84 ms |
15184 KB |
Output is correct |
7 |
Correct |
83 ms |
15100 KB |
Output is correct |
8 |
Correct |
85 ms |
15112 KB |
Output is correct |
9 |
Correct |
85 ms |
15156 KB |
Output is correct |
10 |
Correct |
86 ms |
15120 KB |
Output is correct |
11 |
Correct |
84 ms |
15104 KB |
Output is correct |
12 |
Correct |
84 ms |
15192 KB |
Output is correct |
13 |
Correct |
87 ms |
15096 KB |
Output is correct |
14 |
Correct |
85 ms |
15184 KB |
Output is correct |
15 |
Correct |
84 ms |
15220 KB |
Output is correct |
16 |
Correct |
84 ms |
15080 KB |
Output is correct |
17 |
Correct |
84 ms |
15136 KB |
Output is correct |
18 |
Correct |
85 ms |
15100 KB |
Output is correct |
19 |
Correct |
85 ms |
15076 KB |
Output is correct |
20 |
Correct |
87 ms |
15212 KB |
Output is correct |
21 |
Correct |
86 ms |
15156 KB |
Output is correct |
22 |
Correct |
99 ms |
17100 KB |
Output is correct |
23 |
Correct |
99 ms |
17124 KB |
Output is correct |
24 |
Correct |
97 ms |
17136 KB |
Output is correct |
25 |
Correct |
97 ms |
17100 KB |
Output is correct |
26 |
Correct |
98 ms |
17108 KB |
Output is correct |
27 |
Correct |
97 ms |
17120 KB |
Output is correct |
28 |
Correct |
101 ms |
17104 KB |
Output is correct |
29 |
Correct |
99 ms |
17112 KB |
Output is correct |
30 |
Correct |
96 ms |
17168 KB |
Output is correct |
31 |
Correct |
104 ms |
17100 KB |
Output is correct |
32 |
Correct |
97 ms |
17068 KB |
Output is correct |
33 |
Correct |
96 ms |
17196 KB |
Output is correct |
34 |
Correct |
97 ms |
17096 KB |
Output is correct |
35 |
Correct |
103 ms |
17180 KB |
Output is correct |
36 |
Correct |
111 ms |
17292 KB |
Output is correct |
37 |
Correct |
96 ms |
17152 KB |
Output is correct |
38 |
Correct |
97 ms |
17192 KB |
Output is correct |
39 |
Correct |
98 ms |
17128 KB |
Output is correct |
40 |
Correct |
102 ms |
17148 KB |
Output is correct |
41 |
Correct |
118 ms |
17216 KB |
Output is correct |
42 |
Correct |
97 ms |
17184 KB |
Output is correct |
43 |
Correct |
160 ms |
21360 KB |
Output is correct |
44 |
Correct |
161 ms |
21332 KB |
Output is correct |
45 |
Correct |
166 ms |
21332 KB |
Output is correct |
46 |
Correct |
159 ms |
21392 KB |
Output is correct |
47 |
Correct |
159 ms |
21392 KB |
Output is correct |
48 |
Correct |
158 ms |
21324 KB |
Output is correct |
49 |
Correct |
168 ms |
21320 KB |
Output is correct |
50 |
Correct |
157 ms |
21404 KB |
Output is correct |
51 |
Correct |
159 ms |
21316 KB |
Output is correct |
52 |
Correct |
156 ms |
21368 KB |
Output is correct |
53 |
Correct |
167 ms |
21444 KB |
Output is correct |
54 |
Correct |
162 ms |
21368 KB |
Output is correct |
55 |
Correct |
157 ms |
21284 KB |
Output is correct |
56 |
Correct |
163 ms |
21368 KB |
Output is correct |
57 |
Correct |
158 ms |
21292 KB |
Output is correct |
58 |
Correct |
167 ms |
21396 KB |
Output is correct |
59 |
Correct |
160 ms |
21396 KB |
Output is correct |
60 |
Correct |
162 ms |
21324 KB |
Output is correct |
61 |
Correct |
158 ms |
21320 KB |
Output is correct |
62 |
Correct |
156 ms |
21280 KB |
Output is correct |
63 |
Correct |
163 ms |
21324 KB |
Output is correct |
64 |
Correct |
933 ms |
35352 KB |
Output is correct |
65 |
Correct |
921 ms |
35348 KB |
Output is correct |
66 |
Correct |
928 ms |
35348 KB |
Output is correct |
67 |
Correct |
928 ms |
35408 KB |
Output is correct |
68 |
Correct |
937 ms |
35356 KB |
Output is correct |
69 |
Correct |
931 ms |
35352 KB |
Output is correct |
70 |
Correct |
924 ms |
35312 KB |
Output is correct |
71 |
Correct |
928 ms |
35396 KB |
Output is correct |
72 |
Correct |
928 ms |
35360 KB |
Output is correct |
73 |
Correct |
946 ms |
35280 KB |
Output is correct |
74 |
Correct |
951 ms |
35468 KB |
Output is correct |
75 |
Correct |
929 ms |
35344 KB |
Output is correct |
76 |
Correct |
956 ms |
35260 KB |
Output is correct |
77 |
Correct |
933 ms |
35468 KB |
Output is correct |
78 |
Correct |
943 ms |
35360 KB |
Output is correct |
79 |
Correct |
927 ms |
35420 KB |
Output is correct |
80 |
Correct |
921 ms |
35304 KB |
Output is correct |
81 |
Correct |
923 ms |
35348 KB |
Output is correct |
82 |
Correct |
925 ms |
35388 KB |
Output is correct |
83 |
Correct |
931 ms |
35408 KB |
Output is correct |
84 |
Correct |
929 ms |
35344 KB |
Output is correct |