#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define F first
#define S second
using namespace std;
const int C = 62;
const ll mod = 998'244'353;
int N;
vector<string> v[11];
ll ans, way[C][C][C], edge[C][C];
int id(char c)
{
if ('a' <= c && c <= 'z')
return c - 'a';
else if ('A' <= c && c <= 'Z')
return c - 'A' + 26;
else
return c - '0' + 52;
}
signed main()
{
cin >> N;
for (int i = 1; i <= N; i++)
{
string s;
cin >> s;
v[s.size()].emplace_back(s);
reverse(s.begin(), s.end());
v[s.size()].emplace_back(s);
}
for (int s = 3; s <= 10; s++)
{
sort(v[s].begin(), v[s].end());
v[s].resize(unique(v[s].begin(), v[s].end()) - v[s].begin());
for (int i = 0; i < C; i++)
for (int j = 0; j < C; j++)
for (int k = 0; k < C; k++)
way[i][j][k] = edge[i][j] = 0;
for (auto t : v[s])
edge[id(t.front())][id(t.back())]++;
for (int i = 0; i < C; i++)
for (int j = 0; j < C; j++)
for (int k = 0; k < C; k++)
for (int l = 0; l < C; l++)
way[i][j][k] = (way[i][j][k] + edge[l][i] * edge[l][j] % mod * edge[l][k]) % mod;
for (int i = 0; i < C; i++)
for (int j = 0; j < C; j++)
for (int k = 0; k < C; k++)
for (int l = 0; l < C; l++)
ans = (ans + way[i][j][k] * way[i][j][l] % mod * way[i][k][l] % mod * way[j][k][l]) % mod;
}
cout << ans << '\n';
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1071 ms |
9684 KB |
Output is correct |
2 |
Correct |
1061 ms |
9792 KB |
Output is correct |
3 |
Correct |
1064 ms |
9812 KB |
Output is correct |
4 |
Correct |
1062 ms |
9748 KB |
Output is correct |
5 |
Correct |
1070 ms |
9684 KB |
Output is correct |
6 |
Correct |
1063 ms |
9832 KB |
Output is correct |
7 |
Correct |
1066 ms |
9808 KB |
Output is correct |
8 |
Correct |
1091 ms |
9600 KB |
Output is correct |
9 |
Correct |
1083 ms |
9724 KB |
Output is correct |
10 |
Correct |
1063 ms |
9748 KB |
Output is correct |
11 |
Correct |
1064 ms |
9804 KB |
Output is correct |
12 |
Correct |
1066 ms |
9720 KB |
Output is correct |
13 |
Correct |
1058 ms |
9724 KB |
Output is correct |
14 |
Correct |
1064 ms |
9636 KB |
Output is correct |
15 |
Correct |
1075 ms |
9704 KB |
Output is correct |
16 |
Correct |
1071 ms |
9796 KB |
Output is correct |
17 |
Correct |
1068 ms |
9732 KB |
Output is correct |
18 |
Correct |
1072 ms |
9680 KB |
Output is correct |
19 |
Correct |
1054 ms |
9688 KB |
Output is correct |
20 |
Correct |
1058 ms |
9684 KB |
Output is correct |
21 |
Correct |
1059 ms |
9620 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1071 ms |
9684 KB |
Output is correct |
2 |
Correct |
1061 ms |
9792 KB |
Output is correct |
3 |
Correct |
1064 ms |
9812 KB |
Output is correct |
4 |
Correct |
1062 ms |
9748 KB |
Output is correct |
5 |
Correct |
1070 ms |
9684 KB |
Output is correct |
6 |
Correct |
1063 ms |
9832 KB |
Output is correct |
7 |
Correct |
1066 ms |
9808 KB |
Output is correct |
8 |
Correct |
1091 ms |
9600 KB |
Output is correct |
9 |
Correct |
1083 ms |
9724 KB |
Output is correct |
10 |
Correct |
1063 ms |
9748 KB |
Output is correct |
11 |
Correct |
1064 ms |
9804 KB |
Output is correct |
12 |
Correct |
1066 ms |
9720 KB |
Output is correct |
13 |
Correct |
1058 ms |
9724 KB |
Output is correct |
14 |
Correct |
1064 ms |
9636 KB |
Output is correct |
15 |
Correct |
1075 ms |
9704 KB |
Output is correct |
16 |
Correct |
1071 ms |
9796 KB |
Output is correct |
17 |
Correct |
1068 ms |
9732 KB |
Output is correct |
18 |
Correct |
1072 ms |
9680 KB |
Output is correct |
19 |
Correct |
1054 ms |
9688 KB |
Output is correct |
20 |
Correct |
1058 ms |
9684 KB |
Output is correct |
21 |
Correct |
1059 ms |
9620 KB |
Output is correct |
22 |
Correct |
1068 ms |
9384 KB |
Output is correct |
23 |
Correct |
1058 ms |
9388 KB |
Output is correct |
24 |
Correct |
1052 ms |
9592 KB |
Output is correct |
25 |
Correct |
1055 ms |
9600 KB |
Output is correct |
26 |
Correct |
1059 ms |
9372 KB |
Output is correct |
27 |
Correct |
1059 ms |
9724 KB |
Output is correct |
28 |
Correct |
1057 ms |
9432 KB |
Output is correct |
29 |
Correct |
1068 ms |
9468 KB |
Output is correct |
30 |
Correct |
1052 ms |
9380 KB |
Output is correct |
31 |
Correct |
1065 ms |
9676 KB |
Output is correct |
32 |
Correct |
1056 ms |
9424 KB |
Output is correct |
33 |
Correct |
1055 ms |
9412 KB |
Output is correct |
34 |
Correct |
1063 ms |
9504 KB |
Output is correct |
35 |
Correct |
1064 ms |
9580 KB |
Output is correct |
36 |
Correct |
1060 ms |
9592 KB |
Output is correct |
37 |
Correct |
1059 ms |
9312 KB |
Output is correct |
38 |
Correct |
1090 ms |
9724 KB |
Output is correct |
39 |
Correct |
1063 ms |
9532 KB |
Output is correct |
40 |
Correct |
1072 ms |
9572 KB |
Output is correct |
41 |
Correct |
1091 ms |
9540 KB |
Output is correct |
42 |
Correct |
1063 ms |
9436 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1071 ms |
9684 KB |
Output is correct |
2 |
Correct |
1061 ms |
9792 KB |
Output is correct |
3 |
Correct |
1064 ms |
9812 KB |
Output is correct |
4 |
Correct |
1062 ms |
9748 KB |
Output is correct |
5 |
Correct |
1070 ms |
9684 KB |
Output is correct |
6 |
Correct |
1063 ms |
9832 KB |
Output is correct |
7 |
Correct |
1066 ms |
9808 KB |
Output is correct |
8 |
Correct |
1091 ms |
9600 KB |
Output is correct |
9 |
Correct |
1083 ms |
9724 KB |
Output is correct |
10 |
Correct |
1063 ms |
9748 KB |
Output is correct |
11 |
Correct |
1064 ms |
9804 KB |
Output is correct |
12 |
Correct |
1066 ms |
9720 KB |
Output is correct |
13 |
Correct |
1058 ms |
9724 KB |
Output is correct |
14 |
Correct |
1064 ms |
9636 KB |
Output is correct |
15 |
Correct |
1075 ms |
9704 KB |
Output is correct |
16 |
Correct |
1071 ms |
9796 KB |
Output is correct |
17 |
Correct |
1068 ms |
9732 KB |
Output is correct |
18 |
Correct |
1072 ms |
9680 KB |
Output is correct |
19 |
Correct |
1054 ms |
9688 KB |
Output is correct |
20 |
Correct |
1058 ms |
9684 KB |
Output is correct |
21 |
Correct |
1059 ms |
9620 KB |
Output is correct |
22 |
Correct |
1068 ms |
9384 KB |
Output is correct |
23 |
Correct |
1058 ms |
9388 KB |
Output is correct |
24 |
Correct |
1052 ms |
9592 KB |
Output is correct |
25 |
Correct |
1055 ms |
9600 KB |
Output is correct |
26 |
Correct |
1059 ms |
9372 KB |
Output is correct |
27 |
Correct |
1059 ms |
9724 KB |
Output is correct |
28 |
Correct |
1057 ms |
9432 KB |
Output is correct |
29 |
Correct |
1068 ms |
9468 KB |
Output is correct |
30 |
Correct |
1052 ms |
9380 KB |
Output is correct |
31 |
Correct |
1065 ms |
9676 KB |
Output is correct |
32 |
Correct |
1056 ms |
9424 KB |
Output is correct |
33 |
Correct |
1055 ms |
9412 KB |
Output is correct |
34 |
Correct |
1063 ms |
9504 KB |
Output is correct |
35 |
Correct |
1064 ms |
9580 KB |
Output is correct |
36 |
Correct |
1060 ms |
9592 KB |
Output is correct |
37 |
Correct |
1059 ms |
9312 KB |
Output is correct |
38 |
Correct |
1090 ms |
9724 KB |
Output is correct |
39 |
Correct |
1063 ms |
9532 KB |
Output is correct |
40 |
Correct |
1072 ms |
9572 KB |
Output is correct |
41 |
Correct |
1091 ms |
9540 KB |
Output is correct |
42 |
Correct |
1063 ms |
9436 KB |
Output is correct |
43 |
Correct |
1063 ms |
9344 KB |
Output is correct |
44 |
Correct |
1074 ms |
9360 KB |
Output is correct |
45 |
Correct |
1063 ms |
9352 KB |
Output is correct |
46 |
Correct |
1059 ms |
9348 KB |
Output is correct |
47 |
Correct |
1062 ms |
9304 KB |
Output is correct |
48 |
Correct |
1077 ms |
9328 KB |
Output is correct |
49 |
Correct |
1065 ms |
9700 KB |
Output is correct |
50 |
Correct |
1059 ms |
9744 KB |
Output is correct |
51 |
Correct |
1059 ms |
9596 KB |
Output is correct |
52 |
Correct |
1073 ms |
9356 KB |
Output is correct |
53 |
Correct |
1066 ms |
9344 KB |
Output is correct |
54 |
Correct |
1089 ms |
9352 KB |
Output is correct |
55 |
Correct |
1074 ms |
9320 KB |
Output is correct |
56 |
Correct |
1060 ms |
9356 KB |
Output is correct |
57 |
Correct |
1072 ms |
9352 KB |
Output is correct |
58 |
Correct |
1074 ms |
9344 KB |
Output is correct |
59 |
Correct |
1060 ms |
9676 KB |
Output is correct |
60 |
Correct |
1071 ms |
9708 KB |
Output is correct |
61 |
Correct |
1059 ms |
9464 KB |
Output is correct |
62 |
Correct |
1059 ms |
9552 KB |
Output is correct |
63 |
Correct |
1060 ms |
9352 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1071 ms |
9684 KB |
Output is correct |
2 |
Correct |
1061 ms |
9792 KB |
Output is correct |
3 |
Correct |
1064 ms |
9812 KB |
Output is correct |
4 |
Correct |
1062 ms |
9748 KB |
Output is correct |
5 |
Correct |
1070 ms |
9684 KB |
Output is correct |
6 |
Correct |
1063 ms |
9832 KB |
Output is correct |
7 |
Correct |
1066 ms |
9808 KB |
Output is correct |
8 |
Correct |
1091 ms |
9600 KB |
Output is correct |
9 |
Correct |
1083 ms |
9724 KB |
Output is correct |
10 |
Correct |
1063 ms |
9748 KB |
Output is correct |
11 |
Correct |
1064 ms |
9804 KB |
Output is correct |
12 |
Correct |
1066 ms |
9720 KB |
Output is correct |
13 |
Correct |
1058 ms |
9724 KB |
Output is correct |
14 |
Correct |
1064 ms |
9636 KB |
Output is correct |
15 |
Correct |
1075 ms |
9704 KB |
Output is correct |
16 |
Correct |
1071 ms |
9796 KB |
Output is correct |
17 |
Correct |
1068 ms |
9732 KB |
Output is correct |
18 |
Correct |
1072 ms |
9680 KB |
Output is correct |
19 |
Correct |
1054 ms |
9688 KB |
Output is correct |
20 |
Correct |
1058 ms |
9684 KB |
Output is correct |
21 |
Correct |
1059 ms |
9620 KB |
Output is correct |
22 |
Correct |
1068 ms |
9384 KB |
Output is correct |
23 |
Correct |
1058 ms |
9388 KB |
Output is correct |
24 |
Correct |
1052 ms |
9592 KB |
Output is correct |
25 |
Correct |
1055 ms |
9600 KB |
Output is correct |
26 |
Correct |
1059 ms |
9372 KB |
Output is correct |
27 |
Correct |
1059 ms |
9724 KB |
Output is correct |
28 |
Correct |
1057 ms |
9432 KB |
Output is correct |
29 |
Correct |
1068 ms |
9468 KB |
Output is correct |
30 |
Correct |
1052 ms |
9380 KB |
Output is correct |
31 |
Correct |
1065 ms |
9676 KB |
Output is correct |
32 |
Correct |
1056 ms |
9424 KB |
Output is correct |
33 |
Correct |
1055 ms |
9412 KB |
Output is correct |
34 |
Correct |
1063 ms |
9504 KB |
Output is correct |
35 |
Correct |
1064 ms |
9580 KB |
Output is correct |
36 |
Correct |
1060 ms |
9592 KB |
Output is correct |
37 |
Correct |
1059 ms |
9312 KB |
Output is correct |
38 |
Correct |
1090 ms |
9724 KB |
Output is correct |
39 |
Correct |
1063 ms |
9532 KB |
Output is correct |
40 |
Correct |
1072 ms |
9572 KB |
Output is correct |
41 |
Correct |
1091 ms |
9540 KB |
Output is correct |
42 |
Correct |
1063 ms |
9436 KB |
Output is correct |
43 |
Correct |
1063 ms |
9344 KB |
Output is correct |
44 |
Correct |
1074 ms |
9360 KB |
Output is correct |
45 |
Correct |
1063 ms |
9352 KB |
Output is correct |
46 |
Correct |
1059 ms |
9348 KB |
Output is correct |
47 |
Correct |
1062 ms |
9304 KB |
Output is correct |
48 |
Correct |
1077 ms |
9328 KB |
Output is correct |
49 |
Correct |
1065 ms |
9700 KB |
Output is correct |
50 |
Correct |
1059 ms |
9744 KB |
Output is correct |
51 |
Correct |
1059 ms |
9596 KB |
Output is correct |
52 |
Correct |
1073 ms |
9356 KB |
Output is correct |
53 |
Correct |
1066 ms |
9344 KB |
Output is correct |
54 |
Correct |
1089 ms |
9352 KB |
Output is correct |
55 |
Correct |
1074 ms |
9320 KB |
Output is correct |
56 |
Correct |
1060 ms |
9356 KB |
Output is correct |
57 |
Correct |
1072 ms |
9352 KB |
Output is correct |
58 |
Correct |
1074 ms |
9344 KB |
Output is correct |
59 |
Correct |
1060 ms |
9676 KB |
Output is correct |
60 |
Correct |
1071 ms |
9708 KB |
Output is correct |
61 |
Correct |
1059 ms |
9464 KB |
Output is correct |
62 |
Correct |
1059 ms |
9552 KB |
Output is correct |
63 |
Correct |
1060 ms |
9352 KB |
Output is correct |
64 |
Correct |
1058 ms |
9284 KB |
Output is correct |
65 |
Correct |
1058 ms |
9232 KB |
Output is correct |
66 |
Correct |
1053 ms |
9272 KB |
Output is correct |
67 |
Correct |
1055 ms |
9580 KB |
Output is correct |
68 |
Correct |
1071 ms |
9280 KB |
Output is correct |
69 |
Correct |
1098 ms |
9696 KB |
Output is correct |
70 |
Correct |
1100 ms |
9352 KB |
Output is correct |
71 |
Correct |
1092 ms |
9340 KB |
Output is correct |
72 |
Execution timed out |
1151 ms |
9348 KB |
Time limit exceeded |
73 |
Halted |
0 ms |
0 KB |
- |