#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define pb push_back
const int N=1e6 + 5 ;
const int inf = 1e18 + 7;
const int mod = 998244353;
int g[11][25][25];
int ans = 0;
int n,m,k;
vector<int>vs;
void dfs(int i){
if(i == 4){
for(int sz = 3;sz<=10;sz++){
int val = 1;
for(int j = 0;j<4;j++){
int sum = 0;
for(int k = 0;k<='p'-'a';k++){
int c = 1;
for(int l = 0;l<4;l++){
if(l == j)continue;
c *= g[sz][vs[l]][k];
}
sum += c;
sum %= mod;
}
val *= sum;
val %= mod;
}
ans += val;
ans %= mod;
}
return;
}
for(int l = 0;l<='p'-'a';l++){
vs.pb(l);
dfs(i + 1);
vs.pop_back();
}
}
void solve(){
cin >> n;
map<string,int>mp;
for(int i = 1;i<=n;i++){
string a;
cin >> a;
if(mp[a] == 0)
g[a.size()][a[0]-'a'][a[a.size()-1]-'a'] += 1;
mp[a] += 1;
reverse(all(a));
if(mp[a] == 0){
g[a.size()][a[0]-'a'][a[a.size()-1]-'a'] += 1;
}
mp[a] += 1;
}
dfs(0);
cout << ans << '\n';
}
/*
*/
signed main()
{
ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL);
int tt=1;//cin>>tt>>n;
while(tt--)solve();
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
312 ms |
15048 KB |
Output is correct |
2 |
Correct |
281 ms |
14932 KB |
Output is correct |
3 |
Correct |
287 ms |
14740 KB |
Output is correct |
4 |
Correct |
298 ms |
14948 KB |
Output is correct |
5 |
Correct |
286 ms |
14932 KB |
Output is correct |
6 |
Correct |
292 ms |
14928 KB |
Output is correct |
7 |
Correct |
293 ms |
14936 KB |
Output is correct |
8 |
Correct |
406 ms |
14964 KB |
Output is correct |
9 |
Correct |
300 ms |
14748 KB |
Output is correct |
10 |
Correct |
307 ms |
15188 KB |
Output is correct |
11 |
Correct |
280 ms |
14956 KB |
Output is correct |
12 |
Correct |
315 ms |
14896 KB |
Output is correct |
13 |
Correct |
300 ms |
14972 KB |
Output is correct |
14 |
Correct |
303 ms |
14964 KB |
Output is correct |
15 |
Correct |
287 ms |
15000 KB |
Output is correct |
16 |
Correct |
302 ms |
14932 KB |
Output is correct |
17 |
Correct |
303 ms |
14960 KB |
Output is correct |
18 |
Correct |
300 ms |
14756 KB |
Output is correct |
19 |
Correct |
281 ms |
14948 KB |
Output is correct |
20 |
Correct |
294 ms |
15276 KB |
Output is correct |
21 |
Correct |
306 ms |
14740 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
312 ms |
15048 KB |
Output is correct |
2 |
Correct |
281 ms |
14932 KB |
Output is correct |
3 |
Correct |
287 ms |
14740 KB |
Output is correct |
4 |
Correct |
298 ms |
14948 KB |
Output is correct |
5 |
Correct |
286 ms |
14932 KB |
Output is correct |
6 |
Correct |
292 ms |
14928 KB |
Output is correct |
7 |
Correct |
293 ms |
14936 KB |
Output is correct |
8 |
Correct |
406 ms |
14964 KB |
Output is correct |
9 |
Correct |
300 ms |
14748 KB |
Output is correct |
10 |
Correct |
307 ms |
15188 KB |
Output is correct |
11 |
Correct |
280 ms |
14956 KB |
Output is correct |
12 |
Correct |
315 ms |
14896 KB |
Output is correct |
13 |
Correct |
300 ms |
14972 KB |
Output is correct |
14 |
Correct |
303 ms |
14964 KB |
Output is correct |
15 |
Correct |
287 ms |
15000 KB |
Output is correct |
16 |
Correct |
302 ms |
14932 KB |
Output is correct |
17 |
Correct |
303 ms |
14960 KB |
Output is correct |
18 |
Correct |
300 ms |
14756 KB |
Output is correct |
19 |
Correct |
281 ms |
14948 KB |
Output is correct |
20 |
Correct |
294 ms |
15276 KB |
Output is correct |
21 |
Correct |
306 ms |
14740 KB |
Output is correct |
22 |
Correct |
301 ms |
15700 KB |
Output is correct |
23 |
Correct |
304 ms |
15620 KB |
Output is correct |
24 |
Correct |
305 ms |
15632 KB |
Output is correct |
25 |
Correct |
310 ms |
15612 KB |
Output is correct |
26 |
Correct |
291 ms |
15412 KB |
Output is correct |
27 |
Correct |
301 ms |
15504 KB |
Output is correct |
28 |
Correct |
290 ms |
15572 KB |
Output is correct |
29 |
Correct |
305 ms |
15624 KB |
Output is correct |
30 |
Correct |
288 ms |
15440 KB |
Output is correct |
31 |
Correct |
281 ms |
15440 KB |
Output is correct |
32 |
Correct |
292 ms |
15444 KB |
Output is correct |
33 |
Correct |
282 ms |
15440 KB |
Output is correct |
34 |
Correct |
291 ms |
15988 KB |
Output is correct |
35 |
Correct |
291 ms |
15652 KB |
Output is correct |
36 |
Correct |
285 ms |
15400 KB |
Output is correct |
37 |
Correct |
283 ms |
15444 KB |
Output is correct |
38 |
Correct |
289 ms |
15440 KB |
Output is correct |
39 |
Correct |
330 ms |
15864 KB |
Output is correct |
40 |
Correct |
284 ms |
15444 KB |
Output is correct |
41 |
Correct |
308 ms |
15620 KB |
Output is correct |
42 |
Correct |
285 ms |
15620 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
312 ms |
15048 KB |
Output is correct |
2 |
Correct |
281 ms |
14932 KB |
Output is correct |
3 |
Correct |
287 ms |
14740 KB |
Output is correct |
4 |
Correct |
298 ms |
14948 KB |
Output is correct |
5 |
Correct |
286 ms |
14932 KB |
Output is correct |
6 |
Correct |
292 ms |
14928 KB |
Output is correct |
7 |
Correct |
293 ms |
14936 KB |
Output is correct |
8 |
Correct |
406 ms |
14964 KB |
Output is correct |
9 |
Correct |
300 ms |
14748 KB |
Output is correct |
10 |
Correct |
307 ms |
15188 KB |
Output is correct |
11 |
Correct |
280 ms |
14956 KB |
Output is correct |
12 |
Correct |
315 ms |
14896 KB |
Output is correct |
13 |
Correct |
300 ms |
14972 KB |
Output is correct |
14 |
Correct |
303 ms |
14964 KB |
Output is correct |
15 |
Correct |
287 ms |
15000 KB |
Output is correct |
16 |
Correct |
302 ms |
14932 KB |
Output is correct |
17 |
Correct |
303 ms |
14960 KB |
Output is correct |
18 |
Correct |
300 ms |
14756 KB |
Output is correct |
19 |
Correct |
281 ms |
14948 KB |
Output is correct |
20 |
Correct |
294 ms |
15276 KB |
Output is correct |
21 |
Correct |
306 ms |
14740 KB |
Output is correct |
22 |
Correct |
301 ms |
15700 KB |
Output is correct |
23 |
Correct |
304 ms |
15620 KB |
Output is correct |
24 |
Correct |
305 ms |
15632 KB |
Output is correct |
25 |
Correct |
310 ms |
15612 KB |
Output is correct |
26 |
Correct |
291 ms |
15412 KB |
Output is correct |
27 |
Correct |
301 ms |
15504 KB |
Output is correct |
28 |
Correct |
290 ms |
15572 KB |
Output is correct |
29 |
Correct |
305 ms |
15624 KB |
Output is correct |
30 |
Correct |
288 ms |
15440 KB |
Output is correct |
31 |
Correct |
281 ms |
15440 KB |
Output is correct |
32 |
Correct |
292 ms |
15444 KB |
Output is correct |
33 |
Correct |
282 ms |
15440 KB |
Output is correct |
34 |
Correct |
291 ms |
15988 KB |
Output is correct |
35 |
Correct |
291 ms |
15652 KB |
Output is correct |
36 |
Correct |
285 ms |
15400 KB |
Output is correct |
37 |
Correct |
283 ms |
15444 KB |
Output is correct |
38 |
Correct |
289 ms |
15440 KB |
Output is correct |
39 |
Correct |
330 ms |
15864 KB |
Output is correct |
40 |
Correct |
284 ms |
15444 KB |
Output is correct |
41 |
Correct |
308 ms |
15620 KB |
Output is correct |
42 |
Correct |
285 ms |
15620 KB |
Output is correct |
43 |
Incorrect |
280 ms |
15844 KB |
Output isn't correct |
44 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
312 ms |
15048 KB |
Output is correct |
2 |
Correct |
281 ms |
14932 KB |
Output is correct |
3 |
Correct |
287 ms |
14740 KB |
Output is correct |
4 |
Correct |
298 ms |
14948 KB |
Output is correct |
5 |
Correct |
286 ms |
14932 KB |
Output is correct |
6 |
Correct |
292 ms |
14928 KB |
Output is correct |
7 |
Correct |
293 ms |
14936 KB |
Output is correct |
8 |
Correct |
406 ms |
14964 KB |
Output is correct |
9 |
Correct |
300 ms |
14748 KB |
Output is correct |
10 |
Correct |
307 ms |
15188 KB |
Output is correct |
11 |
Correct |
280 ms |
14956 KB |
Output is correct |
12 |
Correct |
315 ms |
14896 KB |
Output is correct |
13 |
Correct |
300 ms |
14972 KB |
Output is correct |
14 |
Correct |
303 ms |
14964 KB |
Output is correct |
15 |
Correct |
287 ms |
15000 KB |
Output is correct |
16 |
Correct |
302 ms |
14932 KB |
Output is correct |
17 |
Correct |
303 ms |
14960 KB |
Output is correct |
18 |
Correct |
300 ms |
14756 KB |
Output is correct |
19 |
Correct |
281 ms |
14948 KB |
Output is correct |
20 |
Correct |
294 ms |
15276 KB |
Output is correct |
21 |
Correct |
306 ms |
14740 KB |
Output is correct |
22 |
Correct |
301 ms |
15700 KB |
Output is correct |
23 |
Correct |
304 ms |
15620 KB |
Output is correct |
24 |
Correct |
305 ms |
15632 KB |
Output is correct |
25 |
Correct |
310 ms |
15612 KB |
Output is correct |
26 |
Correct |
291 ms |
15412 KB |
Output is correct |
27 |
Correct |
301 ms |
15504 KB |
Output is correct |
28 |
Correct |
290 ms |
15572 KB |
Output is correct |
29 |
Correct |
305 ms |
15624 KB |
Output is correct |
30 |
Correct |
288 ms |
15440 KB |
Output is correct |
31 |
Correct |
281 ms |
15440 KB |
Output is correct |
32 |
Correct |
292 ms |
15444 KB |
Output is correct |
33 |
Correct |
282 ms |
15440 KB |
Output is correct |
34 |
Correct |
291 ms |
15988 KB |
Output is correct |
35 |
Correct |
291 ms |
15652 KB |
Output is correct |
36 |
Correct |
285 ms |
15400 KB |
Output is correct |
37 |
Correct |
283 ms |
15444 KB |
Output is correct |
38 |
Correct |
289 ms |
15440 KB |
Output is correct |
39 |
Correct |
330 ms |
15864 KB |
Output is correct |
40 |
Correct |
284 ms |
15444 KB |
Output is correct |
41 |
Correct |
308 ms |
15620 KB |
Output is correct |
42 |
Correct |
285 ms |
15620 KB |
Output is correct |
43 |
Incorrect |
280 ms |
15844 KB |
Output isn't correct |
44 |
Halted |
0 ms |
0 KB |
- |