#include<bits/stdc++.h>
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
#define int long long int
using namespace std;
const int k = 16;
int dp[k][k][k][k];
int dp2[k][k][k][k];
int cnt[k][k];
map<char, int> ptr;
void clear(){
for(int a = 0; a < k; a++){
for(int b = 0; b < k; b++){
for(int c = 0; c < k; c++){
for(int d = 0; d < k; d++){
dp[a][b][c][d] = 0;
dp2[a][b][c][d] = 0;
}
}
}
}
}
int solve(vector<vector<int>>& cnt){
clear();
/*for(auto p : cnt){
cout << p.first.first << "-" << p.first.second << "=>" << p.second << "\n";
}*/
for(int a = 0; a < k; a++){
for(int b = 0; b < k; b++){
for(int c = 0; c < k; c++){
for(int d = 0; d < k; d++){
dp[a][b][c][d] = cnt[a][b] * cnt[b][d] % mod * cnt[d][c] % mod * cnt[c][a] % mod;
}
}
}
}
for(int a = 0; a < k; a++){
for(int b = 0; b < k; b++){
for(int c = 0; c < k; c++){
for(int d = 0; d < k; d++){
for(int f = 0; f < k; f++){
dp2[a][f][c][d] += dp[a][b][c][d] * cnt[b][f] % mod;
dp2[a][f][c][d] %= mod;
}
}
}
}
}
for(int a = 0; a < k; a++){
for(int b = 0; b < k; b++){
for(int c = 0; c < k; c++){
for(int d = 0; d < k; d++){
dp[a][b][c][d] = 0;
}
}
}
}
for(int a = 0; a < k; a++){
for(int f = 0; f < k; f++){
for(int c = 0; c < k; c++){
for(int d = 0; d < k; d++){
for(int h = 0; h < k; h++){
dp[a][f][c][h] += dp2[a][f][c][d] * cnt[d][h] % mod * cnt[f][h] % mod;
dp[a][f][c][h] %= mod;
}
}
}
}
}
for(int a = 0; a < k; a++){
for(int b = 0; b < k; b++){
for(int c = 0; c < k; c++){
for(int d = 0; d < k; d++){
dp2[a][b][c][d] = 0;
}
}
}
}
for(int a = 0; a < k; a++){
for(int f = 0; f < k; f++){
for(int c = 0; c < k; c++){
for(int h = 0; h < k; h++){
for(int g = 0; g < k; g++){
dp2[a][f][g][h] += dp[a][f][c][h] * cnt[c][g] % mod * cnt[g][h] % mod;
dp2[a][f][g][h] %= mod;
}
}
}
}
}
int ret = 0;
for(int a = 0; a < k; a++){
for(int f = 0; f < k; f++){
for(int g = 0; g < k; g++){
for(int h = 0; h < k; h++){
for(int e = 0; e < k; e++){
ret += dp2[a][f][g][h] * cnt[a][e] % mod * cnt[f][e] % mod * cnt[g][e] % mod;
ret %= mod;
}
}
}
}
}
return ret;
}
int32_t main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, ans = 0;
cin >> n;
unordered_set<string> S[11];
vector<string> arr;
for(int i = 0; i < n; i++){
string s;
cin >> s;
S[sz(s)].insert(s);
reverse(all(s));
S[sz(s)].insert(s);
}
for(char i = 'a'; i <= 'p'; i++) ptr[i] = 0;
// for(char i = 'A'; i <= 'P'; i++) ptr[i] = 0;
int ind = 0;
for(auto& p : ptr){
p.second = ind++;
}
for(int i = 3; i <= 10; i++){
if(S[i].empty()) continue;
vector<vector<int> > cnt(k, vector<int>(k, 0));
for(auto p : S[i]){
cnt[ptr[p[0]]][ptr[p[i - 1]]]++;
}
ans += solve(cnt);
}
cout << ans % mod;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
362 ms |
15272 KB |
Output is correct |
2 |
Correct |
353 ms |
16108 KB |
Output is correct |
3 |
Correct |
370 ms |
16168 KB |
Output is correct |
4 |
Correct |
346 ms |
16292 KB |
Output is correct |
5 |
Correct |
355 ms |
16168 KB |
Output is correct |
6 |
Correct |
365 ms |
16220 KB |
Output is correct |
7 |
Correct |
371 ms |
16292 KB |
Output is correct |
8 |
Correct |
379 ms |
16216 KB |
Output is correct |
9 |
Correct |
365 ms |
16152 KB |
Output is correct |
10 |
Correct |
388 ms |
16168 KB |
Output is correct |
11 |
Correct |
395 ms |
16160 KB |
Output is correct |
12 |
Correct |
392 ms |
16108 KB |
Output is correct |
13 |
Correct |
348 ms |
16168 KB |
Output is correct |
14 |
Correct |
351 ms |
16168 KB |
Output is correct |
15 |
Correct |
446 ms |
16168 KB |
Output is correct |
16 |
Correct |
344 ms |
16168 KB |
Output is correct |
17 |
Correct |
404 ms |
16172 KB |
Output is correct |
18 |
Correct |
371 ms |
16184 KB |
Output is correct |
19 |
Correct |
388 ms |
16168 KB |
Output is correct |
20 |
Correct |
343 ms |
16296 KB |
Output is correct |
21 |
Correct |
405 ms |
16296 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
362 ms |
15272 KB |
Output is correct |
2 |
Correct |
353 ms |
16108 KB |
Output is correct |
3 |
Correct |
370 ms |
16168 KB |
Output is correct |
4 |
Correct |
346 ms |
16292 KB |
Output is correct |
5 |
Correct |
355 ms |
16168 KB |
Output is correct |
6 |
Correct |
365 ms |
16220 KB |
Output is correct |
7 |
Correct |
371 ms |
16292 KB |
Output is correct |
8 |
Correct |
379 ms |
16216 KB |
Output is correct |
9 |
Correct |
365 ms |
16152 KB |
Output is correct |
10 |
Correct |
388 ms |
16168 KB |
Output is correct |
11 |
Correct |
395 ms |
16160 KB |
Output is correct |
12 |
Correct |
392 ms |
16108 KB |
Output is correct |
13 |
Correct |
348 ms |
16168 KB |
Output is correct |
14 |
Correct |
351 ms |
16168 KB |
Output is correct |
15 |
Correct |
446 ms |
16168 KB |
Output is correct |
16 |
Correct |
344 ms |
16168 KB |
Output is correct |
17 |
Correct |
404 ms |
16172 KB |
Output is correct |
18 |
Correct |
371 ms |
16184 KB |
Output is correct |
19 |
Correct |
388 ms |
16168 KB |
Output is correct |
20 |
Correct |
343 ms |
16296 KB |
Output is correct |
21 |
Correct |
405 ms |
16296 KB |
Output is correct |
22 |
Correct |
379 ms |
15992 KB |
Output is correct |
23 |
Correct |
351 ms |
16088 KB |
Output is correct |
24 |
Correct |
356 ms |
15992 KB |
Output is correct |
25 |
Correct |
390 ms |
16120 KB |
Output is correct |
26 |
Correct |
358 ms |
16080 KB |
Output is correct |
27 |
Correct |
376 ms |
16048 KB |
Output is correct |
28 |
Correct |
365 ms |
16160 KB |
Output is correct |
29 |
Correct |
356 ms |
16120 KB |
Output is correct |
30 |
Correct |
378 ms |
15992 KB |
Output is correct |
31 |
Correct |
355 ms |
15992 KB |
Output is correct |
32 |
Correct |
344 ms |
15992 KB |
Output is correct |
33 |
Correct |
343 ms |
15992 KB |
Output is correct |
34 |
Correct |
343 ms |
15992 KB |
Output is correct |
35 |
Correct |
329 ms |
16120 KB |
Output is correct |
36 |
Correct |
339 ms |
15992 KB |
Output is correct |
37 |
Correct |
345 ms |
16152 KB |
Output is correct |
38 |
Correct |
365 ms |
16172 KB |
Output is correct |
39 |
Correct |
356 ms |
16120 KB |
Output is correct |
40 |
Correct |
338 ms |
15992 KB |
Output is correct |
41 |
Correct |
372 ms |
16120 KB |
Output is correct |
42 |
Correct |
387 ms |
16120 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
362 ms |
15272 KB |
Output is correct |
2 |
Correct |
353 ms |
16108 KB |
Output is correct |
3 |
Correct |
370 ms |
16168 KB |
Output is correct |
4 |
Correct |
346 ms |
16292 KB |
Output is correct |
5 |
Correct |
355 ms |
16168 KB |
Output is correct |
6 |
Correct |
365 ms |
16220 KB |
Output is correct |
7 |
Correct |
371 ms |
16292 KB |
Output is correct |
8 |
Correct |
379 ms |
16216 KB |
Output is correct |
9 |
Correct |
365 ms |
16152 KB |
Output is correct |
10 |
Correct |
388 ms |
16168 KB |
Output is correct |
11 |
Correct |
395 ms |
16160 KB |
Output is correct |
12 |
Correct |
392 ms |
16108 KB |
Output is correct |
13 |
Correct |
348 ms |
16168 KB |
Output is correct |
14 |
Correct |
351 ms |
16168 KB |
Output is correct |
15 |
Correct |
446 ms |
16168 KB |
Output is correct |
16 |
Correct |
344 ms |
16168 KB |
Output is correct |
17 |
Correct |
404 ms |
16172 KB |
Output is correct |
18 |
Correct |
371 ms |
16184 KB |
Output is correct |
19 |
Correct |
388 ms |
16168 KB |
Output is correct |
20 |
Correct |
343 ms |
16296 KB |
Output is correct |
21 |
Correct |
405 ms |
16296 KB |
Output is correct |
22 |
Correct |
379 ms |
15992 KB |
Output is correct |
23 |
Correct |
351 ms |
16088 KB |
Output is correct |
24 |
Correct |
356 ms |
15992 KB |
Output is correct |
25 |
Correct |
390 ms |
16120 KB |
Output is correct |
26 |
Correct |
358 ms |
16080 KB |
Output is correct |
27 |
Correct |
376 ms |
16048 KB |
Output is correct |
28 |
Correct |
365 ms |
16160 KB |
Output is correct |
29 |
Correct |
356 ms |
16120 KB |
Output is correct |
30 |
Correct |
378 ms |
15992 KB |
Output is correct |
31 |
Correct |
355 ms |
15992 KB |
Output is correct |
32 |
Correct |
344 ms |
15992 KB |
Output is correct |
33 |
Correct |
343 ms |
15992 KB |
Output is correct |
34 |
Correct |
343 ms |
15992 KB |
Output is correct |
35 |
Correct |
329 ms |
16120 KB |
Output is correct |
36 |
Correct |
339 ms |
15992 KB |
Output is correct |
37 |
Correct |
345 ms |
16152 KB |
Output is correct |
38 |
Correct |
365 ms |
16172 KB |
Output is correct |
39 |
Correct |
356 ms |
16120 KB |
Output is correct |
40 |
Correct |
338 ms |
15992 KB |
Output is correct |
41 |
Correct |
372 ms |
16120 KB |
Output is correct |
42 |
Correct |
387 ms |
16120 KB |
Output is correct |
43 |
Incorrect |
359 ms |
16376 KB |
Output isn't correct |
44 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
362 ms |
15272 KB |
Output is correct |
2 |
Correct |
353 ms |
16108 KB |
Output is correct |
3 |
Correct |
370 ms |
16168 KB |
Output is correct |
4 |
Correct |
346 ms |
16292 KB |
Output is correct |
5 |
Correct |
355 ms |
16168 KB |
Output is correct |
6 |
Correct |
365 ms |
16220 KB |
Output is correct |
7 |
Correct |
371 ms |
16292 KB |
Output is correct |
8 |
Correct |
379 ms |
16216 KB |
Output is correct |
9 |
Correct |
365 ms |
16152 KB |
Output is correct |
10 |
Correct |
388 ms |
16168 KB |
Output is correct |
11 |
Correct |
395 ms |
16160 KB |
Output is correct |
12 |
Correct |
392 ms |
16108 KB |
Output is correct |
13 |
Correct |
348 ms |
16168 KB |
Output is correct |
14 |
Correct |
351 ms |
16168 KB |
Output is correct |
15 |
Correct |
446 ms |
16168 KB |
Output is correct |
16 |
Correct |
344 ms |
16168 KB |
Output is correct |
17 |
Correct |
404 ms |
16172 KB |
Output is correct |
18 |
Correct |
371 ms |
16184 KB |
Output is correct |
19 |
Correct |
388 ms |
16168 KB |
Output is correct |
20 |
Correct |
343 ms |
16296 KB |
Output is correct |
21 |
Correct |
405 ms |
16296 KB |
Output is correct |
22 |
Correct |
379 ms |
15992 KB |
Output is correct |
23 |
Correct |
351 ms |
16088 KB |
Output is correct |
24 |
Correct |
356 ms |
15992 KB |
Output is correct |
25 |
Correct |
390 ms |
16120 KB |
Output is correct |
26 |
Correct |
358 ms |
16080 KB |
Output is correct |
27 |
Correct |
376 ms |
16048 KB |
Output is correct |
28 |
Correct |
365 ms |
16160 KB |
Output is correct |
29 |
Correct |
356 ms |
16120 KB |
Output is correct |
30 |
Correct |
378 ms |
15992 KB |
Output is correct |
31 |
Correct |
355 ms |
15992 KB |
Output is correct |
32 |
Correct |
344 ms |
15992 KB |
Output is correct |
33 |
Correct |
343 ms |
15992 KB |
Output is correct |
34 |
Correct |
343 ms |
15992 KB |
Output is correct |
35 |
Correct |
329 ms |
16120 KB |
Output is correct |
36 |
Correct |
339 ms |
15992 KB |
Output is correct |
37 |
Correct |
345 ms |
16152 KB |
Output is correct |
38 |
Correct |
365 ms |
16172 KB |
Output is correct |
39 |
Correct |
356 ms |
16120 KB |
Output is correct |
40 |
Correct |
338 ms |
15992 KB |
Output is correct |
41 |
Correct |
372 ms |
16120 KB |
Output is correct |
42 |
Correct |
387 ms |
16120 KB |
Output is correct |
43 |
Incorrect |
359 ms |
16376 KB |
Output isn't correct |
44 |
Halted |
0 ms |
0 KB |
- |