#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define fs first
#define ss second
#define str string
#define all(a) a.begin(), a.end()
#define print(a) \
for (auto x : a) \
cout << x << ' '; \
cout << endl;
#define each(x, a) for (auto x : a)
vector<int> ans;
vector<set<int>> used;
int n, k, t, sx = 0;
bool good(int s1, int s2){
int ans = 0;
while(s1 > 0 or s2 > 0){
ans += (s1 % 2 != s2 % 2);
s1 /= 2;
s2 /= 2;
}
return ans == k;
}
bool dfs(int node, int step){
if(step == (1 << n) - 1){
if(t == 0){
ans.push_back(node);
return true;
}
if(good(sx, node))
ans.push_back(node);
else
return false;
return true;
}
used[node].insert(step);
if(k == 1 or k == 17){
int x = node;
for (int i = 0; i < n; i++)
{
x ^= (1 << i);
if (k == 1 and used[x].find(step + 1) == used[x].end() and dfs(x, step + 1))
{
ans.push_back(node);
return true;
}
else if (k == 17 and used[node ^ x].find(step + 1) == used[node ^ x].end() and dfs(node ^ x, step + 1))
{
ans.push_back(node);
return true;
}
x ^= (1 << i);
}
}
else if(k == 3 or k == 15){
int y = node;
for(int i = 0; i < n; i ++){
y ^= (1 << i);
for(int j = i + 1; j < n; j ++){
y ^= (1 << j);
for(int x = j + 1; x < n; x ++){
y ^= (1 << x);
if (k == 3 and used[y].find(step + 1) == used[y].end() and dfs(y, step + 1))
{
ans.push_back(node);
return true;
}
else if (k == 15 and used[node ^ y].find(step + 1) == used[node ^ y].end() and dfs(node ^ y, step + 1)){
ans.push_back(node);
return true;
}
y ^= (1 << x);
}
y ^= (1 << j);
}
y ^= (1 << i);
}
}
else if(k == 5 or k == 13){
int y = node;
for (int i = 0; i < n; i++)
{
y ^= (1 << i);
for (int j = i + 1; j < n; j++)
{
y ^= (1 << j);
for (int x = j + 1; x < n; x++)
{
y ^= (1 << x);
for (int i1 = x + 1; i1 < n; i1++)
{
y ^= (1 << i1);
for(int i2 = i1 + 1; i2 < n; i2 ++){
y ^= (1 << i2);
if (k == 5 and used[y].find(step + 1) == used[y].end() and dfs(y, step + 1))
{
ans.push_back(node);
return true;
}
else if (k == 13 and used[node ^ y].find(step + 1) == used[node ^ y].end() and dfs(node ^ y, step + 1))
{
ans.push_back(node);
return true;
}
y ^= (1 << i2);
}
y ^= (1 << i1);
}
y ^= (1 << x);
}
y ^= (1 << j);
}
y ^= (1 << i);
}
}
else if(k == 7 or k == 11){
int y = node;
for (int i = 0; i < n; i++)
{
y ^= (1 << i);
for (int j = i + 1; j < n; j++)
{
y ^= (1 << j);
for (int x = j + 1; x < n; x++)
{
y ^= (1 << x);
for (int i1 = x + 1; i1 < n; i1++)
{
y ^= (1 << i1);
for (int i2 = i1 + 1; i2 < n; i2++)
{
y ^= (1 << i2);
for (int i3 = i2 + 1; i3 < n; i3++)
{
y ^= (1 << i3);
for(int i4 = i3 + 1; i4 < n; i4 ++){
y ^= (1 << i4);
if (k == 7 and used[y].find(step + 1) == used[y].end() and dfs(y, step + 1))
{
ans.push_back(node);
return true;
}
else if (k == 11 and used[node ^ y].find(step + 1) == used[node ^ y].end() and dfs(node ^ y, step + 1)){
ans.push_back(node);
return true;
}
y ^= (1 << i4);
}
y ^= (1 << i3);
}
y ^= (1 << i2);
}
y ^= (1 << i1);
}
y ^= (1 << x);
}
y ^= (1 << j);
}
y ^= (1 << i);
}
}
return false;
}
void solve(){
cin >> n >> k >> t;
str s;
cin >> s;
for(int i = s.size() - 1; i >= 0; i --){
if(s[i] == '1'){
sx += (1 << (s.size() - 1 - i));
}
}
if(k % 2 == 0 or k == 9){
cout << -1;
return;
}
used.resize((1 << n));
if(dfs(sx, 0)){
cout << (1 << n) << endl;
reverse(all(ans));
for(int i = 0; i < ans.size(); i ++){
str s = "";
for(int j = 0; j < n; j ++){
if(ans[i] % 2 == 0)
s += '0';
else
s += '1';
ans[i] >>= 1;
}
reverse(all(s));
cout << s << endl;
}
}
else{
cout << -1;
}
}
signed main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t = 1;
// cin >> t;
while (t--)
{
solve();
cout << endl;
}
}
Compilation message
lyuboyn.cpp: In function 'void solve()':
lyuboyn.cpp:187:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
187 | for(int i = 0; i < ans.size(); i ++){
| ~~^~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
The values in the output sequence are not pairwise distinct! |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
The values in the output sequence are not pairwise distinct! |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Ok |
| 2 |
Correct |
0 ms |
348 KB |
Ok |
| 3 |
Correct |
1 ms |
344 KB |
Ok |
| 4 |
Correct |
1 ms |
348 KB |
Ok |
| 5 |
Correct |
0 ms |
348 KB |
Ok |
| 6 |
Correct |
0 ms |
348 KB |
Ok |
| 7 |
Correct |
0 ms |
348 KB |
Ok |
| 8 |
Correct |
1 ms |
348 KB |
Ok |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
143 ms |
59856 KB |
The values in the output sequence are not pairwise distinct! |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
348 KB |
The values in the output sequence are not pairwise distinct! |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
167 ms |
59980 KB |
The values in the output sequence are not pairwise distinct! |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
143 ms |
59856 KB |
The values in the output sequence are not pairwise distinct! |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1065 ms |
31088 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
