//#pragma GCC optimze("O3,unroll-loops")
//#pragma GCC target("avx,avx2,bmi,bmi2")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
constexpr ll mod = 998244353;
ll tmp[62][62][62];
inline ll solve(vector<string> words){
map<pair<char,char>,set<string>> mp;
set<char> st;
for(auto& word : words){
st.insert(word[0]);
st.insert(word.back());
mp[{word[0],word.back()}].insert(word);
reverse(word.begin(),word.end());
mp[{word[0],word.back()}].insert(word);
reverse(word.begin(),word.end());
}
vector<int> links(128,-1);
int n = st.size();
vector<vector<ll>> indeg(n,vector<ll>(n,0));
{
int i = 0;
for(auto& c : st){
links[c] = i++;
}
}
for(auto& [k,v] : mp){
if(v.size() > 0){
indeg[links[k.first]][links[k.second]]+=v.size();
}
}
for(int k = 0; k < n; k++){
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
tmp[i][j][k] = 0;
for(int l = 0; l < n; l++){
ll ans1 = (ll)indeg[k][l] * indeg[i][l];
ans1%=mod;
ans1*=indeg[j][l];
ans1%=mod;
tmp[i][j][k] = (tmp[i][j][k] + ans1) % mod;
}
}
}
}
ll ans = 0;
for(int i = 0; i < n; i++){ // top
for(int j = 0; j < n; j++){ // top
for(int k = 0; k < n; k++){ // bot
for (int l = 0; l < n; ++l) { // bot
ll ans_tmp = tmp[i][j][k]*tmp[i][j][l];
ans_tmp%=mod;
ans_tmp*=tmp[i][k][l];
ans_tmp%=mod;
ans_tmp*=tmp[j][k][l];
ans_tmp%=mod;
ans = (ans + ans_tmp) % mod;
}
}
}
}
return ans;
}
inline void solve(){
int n;
cin >> n;
vector<vector<string>> words(11,vector<string>());
for(int i = 0; i < n; i++){
string s;
cin >> s;
words[s.size()].push_back(s);
}
ll ans = 0;
for(int i = 1; i <= 10; i++){
if(words[i].empty()) continue;
ans = (ans + solve(words[i])) % mod;
}
cout << ans << "\n";
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int t = 1;
//cin >> t;
while(t--)
solve();
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
42 ms |
7160 KB |
Output is correct |
2 |
Correct |
42 ms |
8024 KB |
Output is correct |
3 |
Correct |
45 ms |
8416 KB |
Output is correct |
4 |
Correct |
45 ms |
8128 KB |
Output is correct |
5 |
Correct |
42 ms |
8024 KB |
Output is correct |
6 |
Correct |
42 ms |
8112 KB |
Output is correct |
7 |
Correct |
56 ms |
7980 KB |
Output is correct |
8 |
Correct |
45 ms |
8092 KB |
Output is correct |
9 |
Correct |
50 ms |
8028 KB |
Output is correct |
10 |
Correct |
43 ms |
7956 KB |
Output is correct |
11 |
Correct |
42 ms |
8132 KB |
Output is correct |
12 |
Correct |
42 ms |
7988 KB |
Output is correct |
13 |
Correct |
45 ms |
7944 KB |
Output is correct |
14 |
Correct |
41 ms |
7988 KB |
Output is correct |
15 |
Correct |
42 ms |
8128 KB |
Output is correct |
16 |
Correct |
47 ms |
8180 KB |
Output is correct |
17 |
Correct |
42 ms |
7976 KB |
Output is correct |
18 |
Correct |
42 ms |
7916 KB |
Output is correct |
19 |
Correct |
43 ms |
7912 KB |
Output is correct |
20 |
Correct |
43 ms |
7888 KB |
Output is correct |
21 |
Correct |
42 ms |
8024 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
42 ms |
7160 KB |
Output is correct |
2 |
Correct |
42 ms |
8024 KB |
Output is correct |
3 |
Correct |
45 ms |
8416 KB |
Output is correct |
4 |
Correct |
45 ms |
8128 KB |
Output is correct |
5 |
Correct |
42 ms |
8024 KB |
Output is correct |
6 |
Correct |
42 ms |
8112 KB |
Output is correct |
7 |
Correct |
56 ms |
7980 KB |
Output is correct |
8 |
Correct |
45 ms |
8092 KB |
Output is correct |
9 |
Correct |
50 ms |
8028 KB |
Output is correct |
10 |
Correct |
43 ms |
7956 KB |
Output is correct |
11 |
Correct |
42 ms |
8132 KB |
Output is correct |
12 |
Correct |
42 ms |
7988 KB |
Output is correct |
13 |
Correct |
45 ms |
7944 KB |
Output is correct |
14 |
Correct |
41 ms |
7988 KB |
Output is correct |
15 |
Correct |
42 ms |
8128 KB |
Output is correct |
16 |
Correct |
47 ms |
8180 KB |
Output is correct |
17 |
Correct |
42 ms |
7976 KB |
Output is correct |
18 |
Correct |
42 ms |
7916 KB |
Output is correct |
19 |
Correct |
43 ms |
7912 KB |
Output is correct |
20 |
Correct |
43 ms |
7888 KB |
Output is correct |
21 |
Correct |
42 ms |
8024 KB |
Output is correct |
22 |
Correct |
43 ms |
7168 KB |
Output is correct |
23 |
Correct |
51 ms |
7204 KB |
Output is correct |
24 |
Correct |
44 ms |
7136 KB |
Output is correct |
25 |
Correct |
44 ms |
7136 KB |
Output is correct |
26 |
Correct |
45 ms |
7168 KB |
Output is correct |
27 |
Correct |
44 ms |
7216 KB |
Output is correct |
28 |
Correct |
44 ms |
7192 KB |
Output is correct |
29 |
Correct |
53 ms |
7252 KB |
Output is correct |
30 |
Correct |
45 ms |
7256 KB |
Output is correct |
31 |
Correct |
51 ms |
7180 KB |
Output is correct |
32 |
Correct |
43 ms |
7060 KB |
Output is correct |
33 |
Correct |
46 ms |
7256 KB |
Output is correct |
34 |
Correct |
45 ms |
6996 KB |
Output is correct |
35 |
Correct |
43 ms |
7192 KB |
Output is correct |
36 |
Correct |
44 ms |
7012 KB |
Output is correct |
37 |
Correct |
44 ms |
7196 KB |
Output is correct |
38 |
Correct |
47 ms |
7112 KB |
Output is correct |
39 |
Correct |
44 ms |
7208 KB |
Output is correct |
40 |
Correct |
47 ms |
7472 KB |
Output is correct |
41 |
Correct |
43 ms |
7140 KB |
Output is correct |
42 |
Correct |
43 ms |
7208 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
42 ms |
7160 KB |
Output is correct |
2 |
Correct |
42 ms |
8024 KB |
Output is correct |
3 |
Correct |
45 ms |
8416 KB |
Output is correct |
4 |
Correct |
45 ms |
8128 KB |
Output is correct |
5 |
Correct |
42 ms |
8024 KB |
Output is correct |
6 |
Correct |
42 ms |
8112 KB |
Output is correct |
7 |
Correct |
56 ms |
7980 KB |
Output is correct |
8 |
Correct |
45 ms |
8092 KB |
Output is correct |
9 |
Correct |
50 ms |
8028 KB |
Output is correct |
10 |
Correct |
43 ms |
7956 KB |
Output is correct |
11 |
Correct |
42 ms |
8132 KB |
Output is correct |
12 |
Correct |
42 ms |
7988 KB |
Output is correct |
13 |
Correct |
45 ms |
7944 KB |
Output is correct |
14 |
Correct |
41 ms |
7988 KB |
Output is correct |
15 |
Correct |
42 ms |
8128 KB |
Output is correct |
16 |
Correct |
47 ms |
8180 KB |
Output is correct |
17 |
Correct |
42 ms |
7976 KB |
Output is correct |
18 |
Correct |
42 ms |
7916 KB |
Output is correct |
19 |
Correct |
43 ms |
7912 KB |
Output is correct |
20 |
Correct |
43 ms |
7888 KB |
Output is correct |
21 |
Correct |
42 ms |
8024 KB |
Output is correct |
22 |
Correct |
43 ms |
7168 KB |
Output is correct |
23 |
Correct |
51 ms |
7204 KB |
Output is correct |
24 |
Correct |
44 ms |
7136 KB |
Output is correct |
25 |
Correct |
44 ms |
7136 KB |
Output is correct |
26 |
Correct |
45 ms |
7168 KB |
Output is correct |
27 |
Correct |
44 ms |
7216 KB |
Output is correct |
28 |
Correct |
44 ms |
7192 KB |
Output is correct |
29 |
Correct |
53 ms |
7252 KB |
Output is correct |
30 |
Correct |
45 ms |
7256 KB |
Output is correct |
31 |
Correct |
51 ms |
7180 KB |
Output is correct |
32 |
Correct |
43 ms |
7060 KB |
Output is correct |
33 |
Correct |
46 ms |
7256 KB |
Output is correct |
34 |
Correct |
45 ms |
6996 KB |
Output is correct |
35 |
Correct |
43 ms |
7192 KB |
Output is correct |
36 |
Correct |
44 ms |
7012 KB |
Output is correct |
37 |
Correct |
44 ms |
7196 KB |
Output is correct |
38 |
Correct |
47 ms |
7112 KB |
Output is correct |
39 |
Correct |
44 ms |
7208 KB |
Output is correct |
40 |
Correct |
47 ms |
7472 KB |
Output is correct |
41 |
Correct |
43 ms |
7140 KB |
Output is correct |
42 |
Correct |
43 ms |
7208 KB |
Output is correct |
43 |
Correct |
119 ms |
7592 KB |
Output is correct |
44 |
Correct |
114 ms |
7688 KB |
Output is correct |
45 |
Correct |
114 ms |
7508 KB |
Output is correct |
46 |
Correct |
113 ms |
7396 KB |
Output is correct |
47 |
Correct |
115 ms |
7404 KB |
Output is correct |
48 |
Correct |
121 ms |
7408 KB |
Output is correct |
49 |
Correct |
114 ms |
7404 KB |
Output is correct |
50 |
Correct |
113 ms |
7496 KB |
Output is correct |
51 |
Correct |
113 ms |
7376 KB |
Output is correct |
52 |
Correct |
113 ms |
7512 KB |
Output is correct |
53 |
Correct |
113 ms |
7536 KB |
Output is correct |
54 |
Correct |
113 ms |
7800 KB |
Output is correct |
55 |
Correct |
113 ms |
7488 KB |
Output is correct |
56 |
Correct |
115 ms |
7636 KB |
Output is correct |
57 |
Correct |
112 ms |
7492 KB |
Output is correct |
58 |
Correct |
112 ms |
7472 KB |
Output is correct |
59 |
Correct |
132 ms |
7396 KB |
Output is correct |
60 |
Correct |
119 ms |
7444 KB |
Output is correct |
61 |
Correct |
117 ms |
7472 KB |
Output is correct |
62 |
Correct |
112 ms |
7296 KB |
Output is correct |
63 |
Correct |
121 ms |
7328 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
42 ms |
7160 KB |
Output is correct |
2 |
Correct |
42 ms |
8024 KB |
Output is correct |
3 |
Correct |
45 ms |
8416 KB |
Output is correct |
4 |
Correct |
45 ms |
8128 KB |
Output is correct |
5 |
Correct |
42 ms |
8024 KB |
Output is correct |
6 |
Correct |
42 ms |
8112 KB |
Output is correct |
7 |
Correct |
56 ms |
7980 KB |
Output is correct |
8 |
Correct |
45 ms |
8092 KB |
Output is correct |
9 |
Correct |
50 ms |
8028 KB |
Output is correct |
10 |
Correct |
43 ms |
7956 KB |
Output is correct |
11 |
Correct |
42 ms |
8132 KB |
Output is correct |
12 |
Correct |
42 ms |
7988 KB |
Output is correct |
13 |
Correct |
45 ms |
7944 KB |
Output is correct |
14 |
Correct |
41 ms |
7988 KB |
Output is correct |
15 |
Correct |
42 ms |
8128 KB |
Output is correct |
16 |
Correct |
47 ms |
8180 KB |
Output is correct |
17 |
Correct |
42 ms |
7976 KB |
Output is correct |
18 |
Correct |
42 ms |
7916 KB |
Output is correct |
19 |
Correct |
43 ms |
7912 KB |
Output is correct |
20 |
Correct |
43 ms |
7888 KB |
Output is correct |
21 |
Correct |
42 ms |
8024 KB |
Output is correct |
22 |
Correct |
43 ms |
7168 KB |
Output is correct |
23 |
Correct |
51 ms |
7204 KB |
Output is correct |
24 |
Correct |
44 ms |
7136 KB |
Output is correct |
25 |
Correct |
44 ms |
7136 KB |
Output is correct |
26 |
Correct |
45 ms |
7168 KB |
Output is correct |
27 |
Correct |
44 ms |
7216 KB |
Output is correct |
28 |
Correct |
44 ms |
7192 KB |
Output is correct |
29 |
Correct |
53 ms |
7252 KB |
Output is correct |
30 |
Correct |
45 ms |
7256 KB |
Output is correct |
31 |
Correct |
51 ms |
7180 KB |
Output is correct |
32 |
Correct |
43 ms |
7060 KB |
Output is correct |
33 |
Correct |
46 ms |
7256 KB |
Output is correct |
34 |
Correct |
45 ms |
6996 KB |
Output is correct |
35 |
Correct |
43 ms |
7192 KB |
Output is correct |
36 |
Correct |
44 ms |
7012 KB |
Output is correct |
37 |
Correct |
44 ms |
7196 KB |
Output is correct |
38 |
Correct |
47 ms |
7112 KB |
Output is correct |
39 |
Correct |
44 ms |
7208 KB |
Output is correct |
40 |
Correct |
47 ms |
7472 KB |
Output is correct |
41 |
Correct |
43 ms |
7140 KB |
Output is correct |
42 |
Correct |
43 ms |
7208 KB |
Output is correct |
43 |
Correct |
119 ms |
7592 KB |
Output is correct |
44 |
Correct |
114 ms |
7688 KB |
Output is correct |
45 |
Correct |
114 ms |
7508 KB |
Output is correct |
46 |
Correct |
113 ms |
7396 KB |
Output is correct |
47 |
Correct |
115 ms |
7404 KB |
Output is correct |
48 |
Correct |
121 ms |
7408 KB |
Output is correct |
49 |
Correct |
114 ms |
7404 KB |
Output is correct |
50 |
Correct |
113 ms |
7496 KB |
Output is correct |
51 |
Correct |
113 ms |
7376 KB |
Output is correct |
52 |
Correct |
113 ms |
7512 KB |
Output is correct |
53 |
Correct |
113 ms |
7536 KB |
Output is correct |
54 |
Correct |
113 ms |
7800 KB |
Output is correct |
55 |
Correct |
113 ms |
7488 KB |
Output is correct |
56 |
Correct |
115 ms |
7636 KB |
Output is correct |
57 |
Correct |
112 ms |
7492 KB |
Output is correct |
58 |
Correct |
112 ms |
7472 KB |
Output is correct |
59 |
Correct |
132 ms |
7396 KB |
Output is correct |
60 |
Correct |
119 ms |
7444 KB |
Output is correct |
61 |
Correct |
117 ms |
7472 KB |
Output is correct |
62 |
Correct |
112 ms |
7296 KB |
Output is correct |
63 |
Correct |
121 ms |
7328 KB |
Output is correct |
64 |
Correct |
1088 ms |
8940 KB |
Output is correct |
65 |
Correct |
1080 ms |
8964 KB |
Output is correct |
66 |
Execution timed out |
1101 ms |
8972 KB |
Time limit exceeded |
67 |
Halted |
0 ms |
0 KB |
- |