#include <bits/stdc++.h>
#define pb push_back
#define f first
#define s second
using namespace std;
typedef long long ll;
typedef long double ld;
const ll oo = 1e18 + 7;
const ll N = 5e5 + 10;
const ll M = 1000;
const ll M1 = 1e6;
int n;
bool mrk[N];
vector <int> a[N];
vector <int> ans;
vector <vector <int> > ans1;
bool check(int x)
{
for (int i = 0; i < n; i++)
if (x == (1 << i)) return 1;
return 0;
}
void Rec(int x, int y, int prv)
{
// cout << x << " " << y << " " << prv << endl;
ans[y] = x;
mrk[x] = 1;
for (auto i : a[y])
if (i != prv)
{
for (int j = 1; ; j <<= 1)
if (!mrk[j ^ x])
{
mrk[j ^ x] = 1;
Rec(j ^ x, i, y);
break;
}
}
}
int main()
{
ios_base::sync_with_stdio(0);
iostream::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
srand(time(NULL));
cin >> n;
for (int i = 0; i < n; i++)
{
int x, y;
cin >> x >> y;
a[x].pb(y);
a[y].pb(x);
}
ans.resize(n + 1);
Rec(0, 0, 0);
// cout << "Yes\n";
ans1.pb(ans);
for (int x = 0; x < (1 << n); x++)
{
bool g = 1;
for (int i = 0; i <= n; i++) g &= !mrk[ans[i] ^ x];
if (g)
{
ans1.pb(ans);
for (int i = 0; i <= n; i++) ans1.back()[i] ^= x;
for (int i = 0; i <= n; i++) mrk[ans1.back()[i]] = 1;
}
}
cout << ans1.size() << endl;
for (auto i : ans1)
{
for (auto j : i) cout << j << " ";
cout << endl;
}
}
/*
5 3
2 1 1 2 2 3
2 3 3 4 4 5
4 1 1 2 2 3 3 4 4 5
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
8 ms |
11980 KB |
Output is partially correct |
2 |
Partially correct |
7 ms |
11964 KB |
Output is partially correct |
3 |
Partially correct |
6 ms |
11980 KB |
Output is partially correct |
4 |
Partially correct |
6 ms |
11960 KB |
Output is partially correct |
5 |
Partially correct |
6 ms |
11980 KB |
Output is partially correct |
6 |
Partially correct |
8 ms |
12056 KB |
Output is partially correct |
7 |
Partially correct |
6 ms |
12020 KB |
Output is partially correct |
8 |
Partially correct |
7 ms |
11980 KB |
Output is partially correct |
9 |
Partially correct |
14 ms |
12500 KB |
Output is partially correct |
10 |
Partially correct |
8 ms |
12108 KB |
Output is partially correct |
11 |
Partially correct |
10 ms |
12448 KB |
Output is partially correct |
12 |
Partially correct |
14 ms |
12480 KB |
Output is partially correct |
13 |
Partially correct |
7 ms |
11980 KB |
Output is partially correct |
14 |
Partially correct |
13 ms |
12480 KB |
Output is partially correct |
15 |
Partially correct |
12 ms |
12492 KB |
Output is partially correct |
16 |
Partially correct |
9 ms |
12248 KB |
Output is partially correct |
17 |
Partially correct |
13 ms |
12452 KB |
Output is partially correct |
18 |
Partially correct |
12 ms |
12440 KB |
Output is partially correct |
19 |
Partially correct |
13 ms |
12492 KB |
Output is partially correct |
20 |
Partially correct |
13 ms |
12440 KB |
Output is partially correct |
21 |
Partially correct |
7 ms |
11980 KB |
Output is partially correct |
22 |
Partially correct |
13 ms |
12484 KB |
Output is partially correct |
23 |
Partially correct |
13 ms |
12620 KB |
Output is partially correct |
24 |
Partially correct |
15 ms |
12436 KB |
Output is partially correct |
25 |
Partially correct |
13 ms |
12452 KB |
Output is partially correct |
26 |
Partially correct |
19 ms |
12496 KB |
Output is partially correct |