#include <bits/stdc++.h>
#define speed ios_base::sync_with_stdio(0); cin.tie(0)
#define all(x) (x).begin(),(x).end()
#define F first
#define S second
//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx,avx2")
//#pragma GCC target("popcnt")
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll MAX=2e5+10,P=1e9+7;
const ll INF=0x3f3f3f3f,oo=0x3f3f3f3f3f3f3f3f;
const ldb eps=1e-6;
const ldb PI=acos(-1.0);
const int dir[4][2]={{0,1},{0,-1},{1,0},{-1,0}};
template<typename T>
using vvector = vector<vector<T>>;
void print(int x,int k) {
for (int i=k-1;i>=0;i--) {
cout<<bool(x&(1<<i));
}
cout<<"\n";
}
int main() {
speed;
int n,k,t;
string s;
cin>>n>>k>>t;
cin>>s;
int now=0;
for (int i=0;i<k;i++) {
now<<=1;
now+=s[i]-'0';
}
vector<int> seq;
for (int i=0;i<(1<<4);i++) {
// print(now,4);
seq.push_back(now);
now=~now;
if (i&1) {
now^=(-now&now)<<1;
} else now^=1;
}
cout<<(1<<n)<<"\n";
for (int i:seq) print(i,n);
return 0;
}
