#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#pragma GCC target("popcnt")
using namespace std;
using ll = long long;
using ull = unsigned long long;
using lld = long double;
using vi = vector<int>;
using vll = vector<ll>;
using ii = pair<int,int>;
using pll = pair<ll, ll>;
using vii = vector<ii>;
using vpll = vector<pll>;
#define endl '\n'
#define all(x) x.begin(),x.end()
#define lsb(x) x&(-x)
#define gcd(a,b) __gcd(a,b)
#define sz(x) (int)x.size()
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define fls cout.flush()
#define fore(i,l,r) for(auto i=l;i<r;i++)
#define fo(i,n) fore(i,0,n)
#define forex(i,r,l) for(auto i=r; i>=l;i--)
#define ffo(i,n) forex(i,n-1,0)
bool cmin(int &a, int b){if(b<a){a=b;return 1;}return 0;}
bool cmax(int &a, int b){if(b>a){a=b;return 1;}return 0;}
void valid(ll in){cout<<((in)?"YES\n":"NO\n");}
ll lcm(ll a, ll b){return (a/gcd(a,b))*b;}
ll gauss(ll n){return (n*(n+1))/2;}
const int N = 1e5 + 7, LOG=20,mod=998244353;
int n,X=0;
ll cnt[11][64][64][64], cnt2[11][64][64];
string s[N];
map<char, int> let;
void test_case(){
cin>>n;
set<string> st;
fo(i,n){
cin>>s[i];
int t=sz(s[i]);
st.insert(s[i]);
reverse(all(s[i]));
st.insert(s[i]);
}
for(auto e:st)cnt2[sz(e)][let[e[0]]][let[e.back()]]++;
fore(t, 3, 11){
fo(d,X){
fo(a,X){
if(cnt2[t][d][a]==0)continue;
fo(b,X){
if(cnt2[t][b][d]==0)continue;
fo(c,X){
if(cnt2[t][d][c]==0)continue;
ll aa=cnt2[t][d][a];
aa=aa*cnt2[t][b][d];
aa=aa*cnt2[t][d][c];
cnt[t][a][b][c]=(cnt[t][a][b][c]+aa)%mod;
}
}
}
}
}
ll ans=0;
fore(t, 3, 11){
fo(a,X){
fo(b,X){
fo(c,X){
fo(d,X){
if(min({cnt[t][a][b][c],cnt[t][d][a][b],cnt[t][d][c][b],cnt[t][a][d][c]})==0)continue;
ll aa=cnt[t][a][b][c];
aa=aa*cnt[t][d][a][b];
if(aa>=mod)aa%=mod;
ll aa2=cnt[t][d][c][b];
aa2=aa2*cnt[t][a][d][c];
if(aa2>=mod)aa2%=mod;
ans=ans+(aa*aa2)%mod;
if(ans>=mod)ans-=mod;
}
}
}
}
}
ans%=mod;
cout<<ans<<endl;
}
int main(){cin.tie(0)->sync_with_stdio(0);
for(char a='a';a<='z';a++)let[a]=X++;
for(char a='A';a<='Z';a++)let[a]=X++;
for(char a='0';a<='9';a++)let[a]=X++;
int t=1;
// cin >> t;
while(t--)test_case();
}
Compilation message
cubeword.cpp:4: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
4 | #pragma GCC optimization ("O3")
|
cubeword.cpp:5: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
5 | #pragma GCC optimization ("unroll-loops")
|
cubeword.cpp: In function 'void test_case()':
cubeword.cpp:50:13: warning: unused variable 't' [-Wunused-variable]
50 | int t=sz(s[i]);
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
795 ms |
19284 KB |
Output is correct |
2 |
Correct |
831 ms |
19396 KB |
Output is correct |
3 |
Correct |
813 ms |
19264 KB |
Output is correct |
4 |
Correct |
797 ms |
19400 KB |
Output is correct |
5 |
Correct |
809 ms |
19276 KB |
Output is correct |
6 |
Correct |
807 ms |
19404 KB |
Output is correct |
7 |
Correct |
810 ms |
19228 KB |
Output is correct |
8 |
Correct |
795 ms |
19220 KB |
Output is correct |
9 |
Correct |
837 ms |
19404 KB |
Output is correct |
10 |
Correct |
793 ms |
19420 KB |
Output is correct |
11 |
Correct |
794 ms |
19404 KB |
Output is correct |
12 |
Correct |
792 ms |
19396 KB |
Output is correct |
13 |
Correct |
789 ms |
19284 KB |
Output is correct |
14 |
Correct |
793 ms |
19280 KB |
Output is correct |
15 |
Correct |
784 ms |
19420 KB |
Output is correct |
16 |
Correct |
807 ms |
19280 KB |
Output is correct |
17 |
Correct |
787 ms |
19284 KB |
Output is correct |
18 |
Correct |
800 ms |
19316 KB |
Output is correct |
19 |
Correct |
832 ms |
19280 KB |
Output is correct |
20 |
Correct |
811 ms |
19416 KB |
Output is correct |
21 |
Correct |
787 ms |
19280 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
795 ms |
19284 KB |
Output is correct |
2 |
Correct |
831 ms |
19396 KB |
Output is correct |
3 |
Correct |
813 ms |
19264 KB |
Output is correct |
4 |
Correct |
797 ms |
19400 KB |
Output is correct |
5 |
Correct |
809 ms |
19276 KB |
Output is correct |
6 |
Correct |
807 ms |
19404 KB |
Output is correct |
7 |
Correct |
810 ms |
19228 KB |
Output is correct |
8 |
Correct |
795 ms |
19220 KB |
Output is correct |
9 |
Correct |
837 ms |
19404 KB |
Output is correct |
10 |
Correct |
793 ms |
19420 KB |
Output is correct |
11 |
Correct |
794 ms |
19404 KB |
Output is correct |
12 |
Correct |
792 ms |
19396 KB |
Output is correct |
13 |
Correct |
789 ms |
19284 KB |
Output is correct |
14 |
Correct |
793 ms |
19280 KB |
Output is correct |
15 |
Correct |
784 ms |
19420 KB |
Output is correct |
16 |
Correct |
807 ms |
19280 KB |
Output is correct |
17 |
Correct |
787 ms |
19284 KB |
Output is correct |
18 |
Correct |
800 ms |
19316 KB |
Output is correct |
19 |
Correct |
832 ms |
19280 KB |
Output is correct |
20 |
Correct |
811 ms |
19416 KB |
Output is correct |
21 |
Correct |
787 ms |
19280 KB |
Output is correct |
22 |
Correct |
796 ms |
21168 KB |
Output is correct |
23 |
Correct |
804 ms |
20980 KB |
Output is correct |
24 |
Correct |
791 ms |
21080 KB |
Output is correct |
25 |
Correct |
794 ms |
21160 KB |
Output is correct |
26 |
Correct |
808 ms |
21076 KB |
Output is correct |
27 |
Correct |
778 ms |
21160 KB |
Output is correct |
28 |
Correct |
783 ms |
21076 KB |
Output is correct |
29 |
Correct |
779 ms |
21072 KB |
Output is correct |
30 |
Correct |
788 ms |
21332 KB |
Output is correct |
31 |
Correct |
784 ms |
21076 KB |
Output is correct |
32 |
Correct |
779 ms |
21076 KB |
Output is correct |
33 |
Correct |
801 ms |
21156 KB |
Output is correct |
34 |
Correct |
782 ms |
21072 KB |
Output is correct |
35 |
Correct |
796 ms |
21012 KB |
Output is correct |
36 |
Correct |
827 ms |
21172 KB |
Output is correct |
37 |
Correct |
826 ms |
21136 KB |
Output is correct |
38 |
Correct |
794 ms |
21328 KB |
Output is correct |
39 |
Correct |
797 ms |
21024 KB |
Output is correct |
40 |
Correct |
788 ms |
21164 KB |
Output is correct |
41 |
Correct |
790 ms |
21120 KB |
Output is correct |
42 |
Correct |
780 ms |
21168 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
795 ms |
19284 KB |
Output is correct |
2 |
Correct |
831 ms |
19396 KB |
Output is correct |
3 |
Correct |
813 ms |
19264 KB |
Output is correct |
4 |
Correct |
797 ms |
19400 KB |
Output is correct |
5 |
Correct |
809 ms |
19276 KB |
Output is correct |
6 |
Correct |
807 ms |
19404 KB |
Output is correct |
7 |
Correct |
810 ms |
19228 KB |
Output is correct |
8 |
Correct |
795 ms |
19220 KB |
Output is correct |
9 |
Correct |
837 ms |
19404 KB |
Output is correct |
10 |
Correct |
793 ms |
19420 KB |
Output is correct |
11 |
Correct |
794 ms |
19404 KB |
Output is correct |
12 |
Correct |
792 ms |
19396 KB |
Output is correct |
13 |
Correct |
789 ms |
19284 KB |
Output is correct |
14 |
Correct |
793 ms |
19280 KB |
Output is correct |
15 |
Correct |
784 ms |
19420 KB |
Output is correct |
16 |
Correct |
807 ms |
19280 KB |
Output is correct |
17 |
Correct |
787 ms |
19284 KB |
Output is correct |
18 |
Correct |
800 ms |
19316 KB |
Output is correct |
19 |
Correct |
832 ms |
19280 KB |
Output is correct |
20 |
Correct |
811 ms |
19416 KB |
Output is correct |
21 |
Correct |
787 ms |
19280 KB |
Output is correct |
22 |
Correct |
796 ms |
21168 KB |
Output is correct |
23 |
Correct |
804 ms |
20980 KB |
Output is correct |
24 |
Correct |
791 ms |
21080 KB |
Output is correct |
25 |
Correct |
794 ms |
21160 KB |
Output is correct |
26 |
Correct |
808 ms |
21076 KB |
Output is correct |
27 |
Correct |
778 ms |
21160 KB |
Output is correct |
28 |
Correct |
783 ms |
21076 KB |
Output is correct |
29 |
Correct |
779 ms |
21072 KB |
Output is correct |
30 |
Correct |
788 ms |
21332 KB |
Output is correct |
31 |
Correct |
784 ms |
21076 KB |
Output is correct |
32 |
Correct |
779 ms |
21076 KB |
Output is correct |
33 |
Correct |
801 ms |
21156 KB |
Output is correct |
34 |
Correct |
782 ms |
21072 KB |
Output is correct |
35 |
Correct |
796 ms |
21012 KB |
Output is correct |
36 |
Correct |
827 ms |
21172 KB |
Output is correct |
37 |
Correct |
826 ms |
21136 KB |
Output is correct |
38 |
Correct |
794 ms |
21328 KB |
Output is correct |
39 |
Correct |
797 ms |
21024 KB |
Output is correct |
40 |
Correct |
788 ms |
21164 KB |
Output is correct |
41 |
Correct |
790 ms |
21120 KB |
Output is correct |
42 |
Correct |
780 ms |
21168 KB |
Output is correct |
43 |
Correct |
819 ms |
25936 KB |
Output is correct |
44 |
Correct |
814 ms |
26064 KB |
Output is correct |
45 |
Correct |
846 ms |
25940 KB |
Output is correct |
46 |
Correct |
824 ms |
25936 KB |
Output is correct |
47 |
Correct |
804 ms |
25940 KB |
Output is correct |
48 |
Correct |
819 ms |
25884 KB |
Output is correct |
49 |
Correct |
815 ms |
25936 KB |
Output is correct |
50 |
Correct |
841 ms |
26048 KB |
Output is correct |
51 |
Correct |
806 ms |
25856 KB |
Output is correct |
52 |
Correct |
808 ms |
25936 KB |
Output is correct |
53 |
Correct |
804 ms |
25936 KB |
Output is correct |
54 |
Correct |
811 ms |
25940 KB |
Output is correct |
55 |
Correct |
814 ms |
25940 KB |
Output is correct |
56 |
Correct |
807 ms |
25940 KB |
Output is correct |
57 |
Correct |
824 ms |
25896 KB |
Output is correct |
58 |
Correct |
828 ms |
26048 KB |
Output is correct |
59 |
Correct |
821 ms |
26204 KB |
Output is correct |
60 |
Correct |
802 ms |
25940 KB |
Output is correct |
61 |
Correct |
798 ms |
25940 KB |
Output is correct |
62 |
Correct |
801 ms |
26124 KB |
Output is correct |
63 |
Correct |
801 ms |
26044 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
795 ms |
19284 KB |
Output is correct |
2 |
Correct |
831 ms |
19396 KB |
Output is correct |
3 |
Correct |
813 ms |
19264 KB |
Output is correct |
4 |
Correct |
797 ms |
19400 KB |
Output is correct |
5 |
Correct |
809 ms |
19276 KB |
Output is correct |
6 |
Correct |
807 ms |
19404 KB |
Output is correct |
7 |
Correct |
810 ms |
19228 KB |
Output is correct |
8 |
Correct |
795 ms |
19220 KB |
Output is correct |
9 |
Correct |
837 ms |
19404 KB |
Output is correct |
10 |
Correct |
793 ms |
19420 KB |
Output is correct |
11 |
Correct |
794 ms |
19404 KB |
Output is correct |
12 |
Correct |
792 ms |
19396 KB |
Output is correct |
13 |
Correct |
789 ms |
19284 KB |
Output is correct |
14 |
Correct |
793 ms |
19280 KB |
Output is correct |
15 |
Correct |
784 ms |
19420 KB |
Output is correct |
16 |
Correct |
807 ms |
19280 KB |
Output is correct |
17 |
Correct |
787 ms |
19284 KB |
Output is correct |
18 |
Correct |
800 ms |
19316 KB |
Output is correct |
19 |
Correct |
832 ms |
19280 KB |
Output is correct |
20 |
Correct |
811 ms |
19416 KB |
Output is correct |
21 |
Correct |
787 ms |
19280 KB |
Output is correct |
22 |
Correct |
796 ms |
21168 KB |
Output is correct |
23 |
Correct |
804 ms |
20980 KB |
Output is correct |
24 |
Correct |
791 ms |
21080 KB |
Output is correct |
25 |
Correct |
794 ms |
21160 KB |
Output is correct |
26 |
Correct |
808 ms |
21076 KB |
Output is correct |
27 |
Correct |
778 ms |
21160 KB |
Output is correct |
28 |
Correct |
783 ms |
21076 KB |
Output is correct |
29 |
Correct |
779 ms |
21072 KB |
Output is correct |
30 |
Correct |
788 ms |
21332 KB |
Output is correct |
31 |
Correct |
784 ms |
21076 KB |
Output is correct |
32 |
Correct |
779 ms |
21076 KB |
Output is correct |
33 |
Correct |
801 ms |
21156 KB |
Output is correct |
34 |
Correct |
782 ms |
21072 KB |
Output is correct |
35 |
Correct |
796 ms |
21012 KB |
Output is correct |
36 |
Correct |
827 ms |
21172 KB |
Output is correct |
37 |
Correct |
826 ms |
21136 KB |
Output is correct |
38 |
Correct |
794 ms |
21328 KB |
Output is correct |
39 |
Correct |
797 ms |
21024 KB |
Output is correct |
40 |
Correct |
788 ms |
21164 KB |
Output is correct |
41 |
Correct |
790 ms |
21120 KB |
Output is correct |
42 |
Correct |
780 ms |
21168 KB |
Output is correct |
43 |
Correct |
819 ms |
25936 KB |
Output is correct |
44 |
Correct |
814 ms |
26064 KB |
Output is correct |
45 |
Correct |
846 ms |
25940 KB |
Output is correct |
46 |
Correct |
824 ms |
25936 KB |
Output is correct |
47 |
Correct |
804 ms |
25940 KB |
Output is correct |
48 |
Correct |
819 ms |
25884 KB |
Output is correct |
49 |
Correct |
815 ms |
25936 KB |
Output is correct |
50 |
Correct |
841 ms |
26048 KB |
Output is correct |
51 |
Correct |
806 ms |
25856 KB |
Output is correct |
52 |
Correct |
808 ms |
25936 KB |
Output is correct |
53 |
Correct |
804 ms |
25936 KB |
Output is correct |
54 |
Correct |
811 ms |
25940 KB |
Output is correct |
55 |
Correct |
814 ms |
25940 KB |
Output is correct |
56 |
Correct |
807 ms |
25940 KB |
Output is correct |
57 |
Correct |
824 ms |
25896 KB |
Output is correct |
58 |
Correct |
828 ms |
26048 KB |
Output is correct |
59 |
Correct |
821 ms |
26204 KB |
Output is correct |
60 |
Correct |
802 ms |
25940 KB |
Output is correct |
61 |
Correct |
798 ms |
25940 KB |
Output is correct |
62 |
Correct |
801 ms |
26124 KB |
Output is correct |
63 |
Correct |
801 ms |
26044 KB |
Output is correct |
64 |
Correct |
843 ms |
35920 KB |
Output is correct |
65 |
Correct |
846 ms |
35924 KB |
Output is correct |
66 |
Correct |
855 ms |
35924 KB |
Output is correct |
67 |
Correct |
854 ms |
35920 KB |
Output is correct |
68 |
Correct |
856 ms |
35924 KB |
Output is correct |
69 |
Correct |
869 ms |
36180 KB |
Output is correct |
70 |
Correct |
852 ms |
36048 KB |
Output is correct |
71 |
Correct |
853 ms |
36104 KB |
Output is correct |
72 |
Correct |
854 ms |
36180 KB |
Output is correct |
73 |
Correct |
852 ms |
36088 KB |
Output is correct |
74 |
Correct |
872 ms |
35928 KB |
Output is correct |
75 |
Correct |
853 ms |
36180 KB |
Output is correct |
76 |
Correct |
851 ms |
36092 KB |
Output is correct |
77 |
Correct |
848 ms |
36000 KB |
Output is correct |
78 |
Correct |
854 ms |
35876 KB |
Output is correct |
79 |
Correct |
844 ms |
36076 KB |
Output is correct |
80 |
Correct |
884 ms |
36304 KB |
Output is correct |
81 |
Correct |
843 ms |
35920 KB |
Output is correct |
82 |
Correct |
842 ms |
36176 KB |
Output is correct |
83 |
Correct |
863 ms |
35940 KB |
Output is correct |
84 |
Correct |
849 ms |
35868 KB |
Output is correct |