#include "bits/stdc++.h"
using namespace std;
#define ar array
typedef int64_t ll;
//~ #define int ll
const int N = 20;
const int P = 487;
const int mod = 1e9 + 9;
vector<int> edges[N], qwe[N];
int used[N], is[N][N], cur[N];
signed main(){
ios::sync_with_stdio(0); cin.tie(0);
int n, m; cin>>n>>m;
vector<ar<int, 2>> e(m);
for(int i=0;i<m;i++){
cin>>e[i][0]>>e[i][1];
edges[e[i][0]].push_back(e[i][1]);
edges[e[i][1]].push_back(e[i][0]);
is[e[i][0]][e[i][1]] = 1;
}
for(int i=1;i<=n;i++) sort(edges[i].begin(), edges[i].end());
vector<int> p(n);
iota(p.begin(), p.end(), 1);
set<int> ss;
int res = 0;
do{
memset(used, 0, sizeof used);
int cnt = 0;
for(auto u : p){
cur[u] = 0;
qwe[u].clear();
for(auto x : edges[u]){
if(used[x]) continue;
qwe[u].push_back(x);
cur[u] |= (1 << x);
if(!is[u][x]) cnt++;
}
used[u] = 1;
}
int hh = 0;
for(int i=1;i<=n;i++){
hh = (hh * 1ll * P + cur[i]) % mod;
}
if(!ss.count(hh)){
ss.insert(hh);
res = (res + cnt) % mod;
}
}while(next_permutation(p.begin(), p.end()));
cout<<res<<"\n";
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
288 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
1 ms |
444 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
288 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
1 ms |
444 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
2 ms |
212 KB |
Output is correct |
| 27 |
Correct |
2 ms |
212 KB |
Output is correct |
| 28 |
Correct |
2 ms |
348 KB |
Output is correct |
| 29 |
Correct |
2 ms |
340 KB |
Output is correct |
| 30 |
Correct |
3 ms |
468 KB |
Output is correct |
| 31 |
Correct |
3 ms |
468 KB |
Output is correct |
| 32 |
Correct |
7 ms |
320 KB |
Output is correct |
| 33 |
Correct |
9 ms |
320 KB |
Output is correct |
| 34 |
Correct |
11 ms |
340 KB |
Output is correct |
| 35 |
Correct |
14 ms |
488 KB |
Output is correct |
| 36 |
Correct |
15 ms |
808 KB |
Output is correct |
| 37 |
Correct |
20 ms |
1400 KB |
Output is correct |
| 38 |
Correct |
25 ms |
2096 KB |
Output is correct |
| 39 |
Correct |
57 ms |
296 KB |
Output is correct |
| 40 |
Correct |
79 ms |
324 KB |
Output is correct |
| 41 |
Correct |
96 ms |
360 KB |
Output is correct |
| 42 |
Correct |
106 ms |
460 KB |
Output is correct |
| 43 |
Correct |
127 ms |
1572 KB |
Output is correct |
| 44 |
Correct |
149 ms |
2700 KB |
Output is correct |
| 45 |
Incorrect |
184 ms |
5916 KB |
Output isn't correct |
| 46 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
288 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
1 ms |
444 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
2 ms |
212 KB |
Output is correct |
| 27 |
Correct |
2 ms |
212 KB |
Output is correct |
| 28 |
Correct |
2 ms |
348 KB |
Output is correct |
| 29 |
Correct |
2 ms |
340 KB |
Output is correct |
| 30 |
Correct |
3 ms |
468 KB |
Output is correct |
| 31 |
Correct |
3 ms |
468 KB |
Output is correct |
| 32 |
Correct |
7 ms |
320 KB |
Output is correct |
| 33 |
Correct |
9 ms |
320 KB |
Output is correct |
| 34 |
Correct |
11 ms |
340 KB |
Output is correct |
| 35 |
Correct |
14 ms |
488 KB |
Output is correct |
| 36 |
Correct |
15 ms |
808 KB |
Output is correct |
| 37 |
Correct |
20 ms |
1400 KB |
Output is correct |
| 38 |
Correct |
25 ms |
2096 KB |
Output is correct |
| 39 |
Correct |
57 ms |
296 KB |
Output is correct |
| 40 |
Correct |
79 ms |
324 KB |
Output is correct |
| 41 |
Correct |
96 ms |
360 KB |
Output is correct |
| 42 |
Correct |
106 ms |
460 KB |
Output is correct |
| 43 |
Correct |
127 ms |
1572 KB |
Output is correct |
| 44 |
Correct |
149 ms |
2700 KB |
Output is correct |
| 45 |
Incorrect |
184 ms |
5916 KB |
Output isn't correct |
| 46 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
288 KB |
Output is correct |
| 11 |
Correct |
0 ms |
212 KB |
Output is correct |
| 12 |
Correct |
0 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
0 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
212 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
0 ms |
212 KB |
Output is correct |
| 19 |
Correct |
0 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
1 ms |
444 KB |
Output is correct |
| 24 |
Correct |
1 ms |
340 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
2 ms |
212 KB |
Output is correct |
| 27 |
Correct |
2 ms |
212 KB |
Output is correct |
| 28 |
Correct |
2 ms |
348 KB |
Output is correct |
| 29 |
Correct |
2 ms |
340 KB |
Output is correct |
| 30 |
Correct |
3 ms |
468 KB |
Output is correct |
| 31 |
Correct |
3 ms |
468 KB |
Output is correct |
| 32 |
Correct |
7 ms |
320 KB |
Output is correct |
| 33 |
Correct |
9 ms |
320 KB |
Output is correct |
| 34 |
Correct |
11 ms |
340 KB |
Output is correct |
| 35 |
Correct |
14 ms |
488 KB |
Output is correct |
| 36 |
Correct |
15 ms |
808 KB |
Output is correct |
| 37 |
Correct |
20 ms |
1400 KB |
Output is correct |
| 38 |
Correct |
25 ms |
2096 KB |
Output is correct |
| 39 |
Correct |
57 ms |
296 KB |
Output is correct |
| 40 |
Correct |
79 ms |
324 KB |
Output is correct |
| 41 |
Correct |
96 ms |
360 KB |
Output is correct |
| 42 |
Correct |
106 ms |
460 KB |
Output is correct |
| 43 |
Correct |
127 ms |
1572 KB |
Output is correct |
| 44 |
Correct |
149 ms |
2700 KB |
Output is correct |
| 45 |
Incorrect |
184 ms |
5916 KB |
Output isn't correct |
| 46 |
Halted |
0 ms |
0 KB |
- |
