using namespace std;
#include <iostream>
#include <algorithm>
#include <queue>
#include <stack>
#include <deque>
#include <map>
#include <set>
#include <utility>
#include <memory.h>
#include <vector>
#include <bitset>
typedef pair<int,int> pii;
typedef long long LL;
#define iter(x) x.begin(),x.end()
#define F first
#define S second
#define pb push_back
#define mkp make_pair
#include <climits>
const int maxn = 70,mod = (119 << 23)^1;
int ctoi(char c){
if (c >= 'a' and c <= 'p') return c - 'a';
else if (c >= 'A' and c <= 'P') return c - 'A' + 16;
else if (c > 'p' and c <= 'z') return c - 'p' + 31;
else if (c > 'P' and c <= 'Z') return c - 'P' + 41;
else return c - '0' + 52;
}
LL dp[maxn][maxn][maxn]{};
int perm_cnt(int a,int b,int c,int d){
int bb = 24,bbb = 1,cc = 1;
if (a == b) bbb *= ++cc;
else {bb /= bbb; bbb = 1; cc = 1;}
if (b == c) bbb *= ++cc;
else {bb /= bbb; bbb = 1; cc = 1;}
if (c == d) bbb *= ++cc;
bb /= bbb;
return bb;
}
int main(){
ios_base::sync_with_stdio(false); cin.tie(0);
set <string> st[11];
int n;
cin >> n;
for (int i=0;i<n;++i){
string s; cin >> s;
st[s.size()].insert(s);
reverse(iter(s));
st[s.size()].insert(s);
}
LL ans = 0;
for (int len=3;len<=10;++len) if (!st[len].empty()){
int mx = 0;
LL cnt[maxn][maxn]{};
memset(dp,0,sizeof(dp));
for (string s:st[len]){
++cnt[ctoi(s[0])][ctoi(s.back())];
mx = max(mx,ctoi(s[0]));
}
for (int i=0;i<=mx;++i) for (int j=i;j<=mx;++j) for (int k=j;k<=mx;++k) for (int l=0;l<=mx;++l){
dp[i][j][k] += cnt[i][l] * cnt[j][l] % mod * cnt[k][l] % mod;
dp[i][j][k] %= mod;
}
for (int i=0;i<=mx;++i) for (int j=i;j<=mx;++j) for (int k=j;k<=mx;++k) for (int l=k;l<=mx;++l){
ans += dp[i][j][k] * dp[i][j][l] % mod * dp[i][k][l] % mod * dp[j][k][l] % mod * perm_cnt(i,j,k,l);
ans %= mod;
}
}
cout << ans;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
149 ms |
18272 KB |
Output is correct |
2 |
Correct |
143 ms |
18336 KB |
Output is correct |
3 |
Correct |
149 ms |
18244 KB |
Output is correct |
4 |
Correct |
162 ms |
18256 KB |
Output is correct |
5 |
Correct |
173 ms |
18368 KB |
Output is correct |
6 |
Correct |
147 ms |
18264 KB |
Output is correct |
7 |
Correct |
151 ms |
18460 KB |
Output is correct |
8 |
Correct |
147 ms |
18332 KB |
Output is correct |
9 |
Correct |
158 ms |
18336 KB |
Output is correct |
10 |
Correct |
155 ms |
18356 KB |
Output is correct |
11 |
Correct |
148 ms |
18244 KB |
Output is correct |
12 |
Correct |
151 ms |
18304 KB |
Output is correct |
13 |
Correct |
172 ms |
18428 KB |
Output is correct |
14 |
Correct |
158 ms |
18280 KB |
Output is correct |
15 |
Correct |
151 ms |
18356 KB |
Output is correct |
16 |
Correct |
151 ms |
18464 KB |
Output is correct |
17 |
Correct |
156 ms |
18356 KB |
Output is correct |
18 |
Correct |
152 ms |
18316 KB |
Output is correct |
19 |
Correct |
156 ms |
18240 KB |
Output is correct |
20 |
Correct |
153 ms |
18264 KB |
Output is correct |
21 |
Correct |
167 ms |
18348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
149 ms |
18272 KB |
Output is correct |
2 |
Correct |
143 ms |
18336 KB |
Output is correct |
3 |
Correct |
149 ms |
18244 KB |
Output is correct |
4 |
Correct |
162 ms |
18256 KB |
Output is correct |
5 |
Correct |
173 ms |
18368 KB |
Output is correct |
6 |
Correct |
147 ms |
18264 KB |
Output is correct |
7 |
Correct |
151 ms |
18460 KB |
Output is correct |
8 |
Correct |
147 ms |
18332 KB |
Output is correct |
9 |
Correct |
158 ms |
18336 KB |
Output is correct |
10 |
Correct |
155 ms |
18356 KB |
Output is correct |
11 |
Correct |
148 ms |
18244 KB |
Output is correct |
12 |
Correct |
151 ms |
18304 KB |
Output is correct |
13 |
Correct |
172 ms |
18428 KB |
Output is correct |
14 |
Correct |
158 ms |
18280 KB |
Output is correct |
15 |
Correct |
151 ms |
18356 KB |
Output is correct |
16 |
Correct |
151 ms |
18464 KB |
Output is correct |
17 |
Correct |
156 ms |
18356 KB |
Output is correct |
18 |
Correct |
152 ms |
18316 KB |
Output is correct |
19 |
Correct |
156 ms |
18240 KB |
Output is correct |
20 |
Correct |
153 ms |
18264 KB |
Output is correct |
21 |
Correct |
167 ms |
18348 KB |
Output is correct |
22 |
Correct |
157 ms |
18944 KB |
Output is correct |
23 |
Correct |
163 ms |
18900 KB |
Output is correct |
24 |
Correct |
174 ms |
18836 KB |
Output is correct |
25 |
Correct |
165 ms |
19000 KB |
Output is correct |
26 |
Correct |
163 ms |
18916 KB |
Output is correct |
27 |
Correct |
167 ms |
18884 KB |
Output is correct |
28 |
Correct |
165 ms |
18952 KB |
Output is correct |
29 |
Correct |
157 ms |
18876 KB |
Output is correct |
30 |
Correct |
156 ms |
18840 KB |
Output is correct |
31 |
Correct |
154 ms |
18868 KB |
Output is correct |
32 |
Correct |
157 ms |
18884 KB |
Output is correct |
33 |
Correct |
151 ms |
18888 KB |
Output is correct |
34 |
Correct |
153 ms |
18884 KB |
Output is correct |
35 |
Correct |
155 ms |
18932 KB |
Output is correct |
36 |
Correct |
162 ms |
18932 KB |
Output is correct |
37 |
Correct |
151 ms |
18896 KB |
Output is correct |
38 |
Correct |
159 ms |
18876 KB |
Output is correct |
39 |
Correct |
165 ms |
18884 KB |
Output is correct |
40 |
Correct |
163 ms |
18960 KB |
Output is correct |
41 |
Correct |
157 ms |
18876 KB |
Output is correct |
42 |
Correct |
154 ms |
18912 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
149 ms |
18272 KB |
Output is correct |
2 |
Correct |
143 ms |
18336 KB |
Output is correct |
3 |
Correct |
149 ms |
18244 KB |
Output is correct |
4 |
Correct |
162 ms |
18256 KB |
Output is correct |
5 |
Correct |
173 ms |
18368 KB |
Output is correct |
6 |
Correct |
147 ms |
18264 KB |
Output is correct |
7 |
Correct |
151 ms |
18460 KB |
Output is correct |
8 |
Correct |
147 ms |
18332 KB |
Output is correct |
9 |
Correct |
158 ms |
18336 KB |
Output is correct |
10 |
Correct |
155 ms |
18356 KB |
Output is correct |
11 |
Correct |
148 ms |
18244 KB |
Output is correct |
12 |
Correct |
151 ms |
18304 KB |
Output is correct |
13 |
Correct |
172 ms |
18428 KB |
Output is correct |
14 |
Correct |
158 ms |
18280 KB |
Output is correct |
15 |
Correct |
151 ms |
18356 KB |
Output is correct |
16 |
Correct |
151 ms |
18464 KB |
Output is correct |
17 |
Correct |
156 ms |
18356 KB |
Output is correct |
18 |
Correct |
152 ms |
18316 KB |
Output is correct |
19 |
Correct |
156 ms |
18240 KB |
Output is correct |
20 |
Correct |
153 ms |
18264 KB |
Output is correct |
21 |
Correct |
167 ms |
18348 KB |
Output is correct |
22 |
Correct |
157 ms |
18944 KB |
Output is correct |
23 |
Correct |
163 ms |
18900 KB |
Output is correct |
24 |
Correct |
174 ms |
18836 KB |
Output is correct |
25 |
Correct |
165 ms |
19000 KB |
Output is correct |
26 |
Correct |
163 ms |
18916 KB |
Output is correct |
27 |
Correct |
167 ms |
18884 KB |
Output is correct |
28 |
Correct |
165 ms |
18952 KB |
Output is correct |
29 |
Correct |
157 ms |
18876 KB |
Output is correct |
30 |
Correct |
156 ms |
18840 KB |
Output is correct |
31 |
Correct |
154 ms |
18868 KB |
Output is correct |
32 |
Correct |
157 ms |
18884 KB |
Output is correct |
33 |
Correct |
151 ms |
18888 KB |
Output is correct |
34 |
Correct |
153 ms |
18884 KB |
Output is correct |
35 |
Correct |
155 ms |
18932 KB |
Output is correct |
36 |
Correct |
162 ms |
18932 KB |
Output is correct |
37 |
Correct |
151 ms |
18896 KB |
Output is correct |
38 |
Correct |
159 ms |
18876 KB |
Output is correct |
39 |
Correct |
165 ms |
18884 KB |
Output is correct |
40 |
Correct |
163 ms |
18960 KB |
Output is correct |
41 |
Correct |
157 ms |
18876 KB |
Output is correct |
42 |
Correct |
154 ms |
18912 KB |
Output is correct |
43 |
Correct |
169 ms |
19080 KB |
Output is correct |
44 |
Correct |
185 ms |
19012 KB |
Output is correct |
45 |
Correct |
166 ms |
19012 KB |
Output is correct |
46 |
Correct |
181 ms |
19260 KB |
Output is correct |
47 |
Correct |
171 ms |
19120 KB |
Output is correct |
48 |
Correct |
168 ms |
19116 KB |
Output is correct |
49 |
Correct |
174 ms |
19012 KB |
Output is correct |
50 |
Correct |
179 ms |
19088 KB |
Output is correct |
51 |
Correct |
167 ms |
19012 KB |
Output is correct |
52 |
Correct |
165 ms |
19080 KB |
Output is correct |
53 |
Correct |
178 ms |
19084 KB |
Output is correct |
54 |
Correct |
173 ms |
19036 KB |
Output is correct |
55 |
Correct |
182 ms |
19052 KB |
Output is correct |
56 |
Correct |
169 ms |
18996 KB |
Output is correct |
57 |
Correct |
173 ms |
19092 KB |
Output is correct |
58 |
Correct |
169 ms |
19040 KB |
Output is correct |
59 |
Correct |
192 ms |
19012 KB |
Output is correct |
60 |
Correct |
192 ms |
19032 KB |
Output is correct |
61 |
Correct |
186 ms |
19140 KB |
Output is correct |
62 |
Correct |
182 ms |
18992 KB |
Output is correct |
63 |
Correct |
170 ms |
19212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
149 ms |
18272 KB |
Output is correct |
2 |
Correct |
143 ms |
18336 KB |
Output is correct |
3 |
Correct |
149 ms |
18244 KB |
Output is correct |
4 |
Correct |
162 ms |
18256 KB |
Output is correct |
5 |
Correct |
173 ms |
18368 KB |
Output is correct |
6 |
Correct |
147 ms |
18264 KB |
Output is correct |
7 |
Correct |
151 ms |
18460 KB |
Output is correct |
8 |
Correct |
147 ms |
18332 KB |
Output is correct |
9 |
Correct |
158 ms |
18336 KB |
Output is correct |
10 |
Correct |
155 ms |
18356 KB |
Output is correct |
11 |
Correct |
148 ms |
18244 KB |
Output is correct |
12 |
Correct |
151 ms |
18304 KB |
Output is correct |
13 |
Correct |
172 ms |
18428 KB |
Output is correct |
14 |
Correct |
158 ms |
18280 KB |
Output is correct |
15 |
Correct |
151 ms |
18356 KB |
Output is correct |
16 |
Correct |
151 ms |
18464 KB |
Output is correct |
17 |
Correct |
156 ms |
18356 KB |
Output is correct |
18 |
Correct |
152 ms |
18316 KB |
Output is correct |
19 |
Correct |
156 ms |
18240 KB |
Output is correct |
20 |
Correct |
153 ms |
18264 KB |
Output is correct |
21 |
Correct |
167 ms |
18348 KB |
Output is correct |
22 |
Correct |
157 ms |
18944 KB |
Output is correct |
23 |
Correct |
163 ms |
18900 KB |
Output is correct |
24 |
Correct |
174 ms |
18836 KB |
Output is correct |
25 |
Correct |
165 ms |
19000 KB |
Output is correct |
26 |
Correct |
163 ms |
18916 KB |
Output is correct |
27 |
Correct |
167 ms |
18884 KB |
Output is correct |
28 |
Correct |
165 ms |
18952 KB |
Output is correct |
29 |
Correct |
157 ms |
18876 KB |
Output is correct |
30 |
Correct |
156 ms |
18840 KB |
Output is correct |
31 |
Correct |
154 ms |
18868 KB |
Output is correct |
32 |
Correct |
157 ms |
18884 KB |
Output is correct |
33 |
Correct |
151 ms |
18888 KB |
Output is correct |
34 |
Correct |
153 ms |
18884 KB |
Output is correct |
35 |
Correct |
155 ms |
18932 KB |
Output is correct |
36 |
Correct |
162 ms |
18932 KB |
Output is correct |
37 |
Correct |
151 ms |
18896 KB |
Output is correct |
38 |
Correct |
159 ms |
18876 KB |
Output is correct |
39 |
Correct |
165 ms |
18884 KB |
Output is correct |
40 |
Correct |
163 ms |
18960 KB |
Output is correct |
41 |
Correct |
157 ms |
18876 KB |
Output is correct |
42 |
Correct |
154 ms |
18912 KB |
Output is correct |
43 |
Correct |
169 ms |
19080 KB |
Output is correct |
44 |
Correct |
185 ms |
19012 KB |
Output is correct |
45 |
Correct |
166 ms |
19012 KB |
Output is correct |
46 |
Correct |
181 ms |
19260 KB |
Output is correct |
47 |
Correct |
171 ms |
19120 KB |
Output is correct |
48 |
Correct |
168 ms |
19116 KB |
Output is correct |
49 |
Correct |
174 ms |
19012 KB |
Output is correct |
50 |
Correct |
179 ms |
19088 KB |
Output is correct |
51 |
Correct |
167 ms |
19012 KB |
Output is correct |
52 |
Correct |
165 ms |
19080 KB |
Output is correct |
53 |
Correct |
178 ms |
19084 KB |
Output is correct |
54 |
Correct |
173 ms |
19036 KB |
Output is correct |
55 |
Correct |
182 ms |
19052 KB |
Output is correct |
56 |
Correct |
169 ms |
18996 KB |
Output is correct |
57 |
Correct |
173 ms |
19092 KB |
Output is correct |
58 |
Correct |
169 ms |
19040 KB |
Output is correct |
59 |
Correct |
192 ms |
19012 KB |
Output is correct |
60 |
Correct |
192 ms |
19032 KB |
Output is correct |
61 |
Correct |
186 ms |
19140 KB |
Output is correct |
62 |
Correct |
182 ms |
18992 KB |
Output is correct |
63 |
Correct |
170 ms |
19212 KB |
Output is correct |
64 |
Correct |
353 ms |
19344 KB |
Output is correct |
65 |
Correct |
347 ms |
19388 KB |
Output is correct |
66 |
Correct |
361 ms |
19464 KB |
Output is correct |
67 |
Correct |
359 ms |
19268 KB |
Output is correct |
68 |
Correct |
373 ms |
19524 KB |
Output is correct |
69 |
Correct |
346 ms |
19268 KB |
Output is correct |
70 |
Correct |
352 ms |
19412 KB |
Output is correct |
71 |
Correct |
347 ms |
19268 KB |
Output is correct |
72 |
Correct |
349 ms |
19432 KB |
Output is correct |
73 |
Correct |
353 ms |
19336 KB |
Output is correct |
74 |
Correct |
346 ms |
19272 KB |
Output is correct |
75 |
Correct |
346 ms |
19268 KB |
Output is correct |
76 |
Correct |
348 ms |
19396 KB |
Output is correct |
77 |
Correct |
352 ms |
19268 KB |
Output is correct |
78 |
Correct |
345 ms |
19232 KB |
Output is correct |
79 |
Correct |
365 ms |
19340 KB |
Output is correct |
80 |
Correct |
346 ms |
19340 KB |
Output is correct |
81 |
Correct |
369 ms |
19396 KB |
Output is correct |
82 |
Correct |
355 ms |
19304 KB |
Output is correct |
83 |
Correct |
350 ms |
19396 KB |
Output is correct |
84 |
Correct |
380 ms |
19304 KB |
Output is correct |