#include<bits/stdc++.h>
using namespace std;
#define int long long
#define f(i,j,k) for(int i=j;i<=k;++i)
#define g(i,j,k) for(int i=j;i>=k;--i)
int n,m,s,l;
const int N=2e6;
int a[N];char c[N];
string gt(){
	string o="";
	scanf("%s",c+1);
	a[m=0]=1;
	f(i,1,n)if((c[i]^c[i-1])&1){
		l=(i-a[m])%s+a[m];
		if(m&&a[m]==l)--m;
		else a[++m]=l;
	}
	f(i,1,n)c[i]='0';
	f(i,1,m)c[a[i]]='1';
	f(i,1,n)o+=c[i];
	return o;
}
signed main(){
	cin>>n>>s;++n;
	puts(gt()==gt()?"Yes":"No");
	return 0;
}