#include <bits/stdc++.h>
using namespace std;
#define int int64_t
#define F(X) for(int X = 0; X < B; X++)
const int B = 62, LIM = 8, M = 998244353;
int get(char c) {
return c - 'A';
if(c < 60) return c - 48;
return c - (c < 95 ? 55 : 61);
}
int n, _a[LIM][B][B], b[B][B][B], c[B][B][B][B], res;
map<string, bool> inp[11];
int32_t main() {
ios::sync_with_stdio(0), cin.tie(0);
cin >> n;
while(n--) {
string s; cin >> s;
if(get(s[0]) > get(end(s)[-1]))
reverse(begin(s), end(s));
int i = size(s);
if(inp[i][s]) continue;
inp[i][s] = 1;
string t = s;
reverse(begin(t), end(t));
int x = get(s[0]), y = get(end(s)[-1]);
++_a[i-3][x][y];
if(s != t) ++_a[i-3][y][x];
}
for(int L = 0; L < 8; L++) {
auto a = _a[L];
memset(b, 0, sizeof b);
memset(c, 0, sizeof c);
F(i) F(j) F(k) F(x)
(b[i][j][k] += (((a[i][x] * a[j][x]) % M) * a[k][x])) %= M;
F(i) F(j) F(k) F(l)
c[i][j][k][l] = (b[i][j][l] * b[j][k][l]) % M;
F(i) F(j) F(k) F(l)
(res += c[i][j][k][l] * c[l][k][j][i]) %= M;
}
cout << res;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1197 ms |
125184 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1197 ms |
125184 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1197 ms |
125184 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1197 ms |
125184 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |