#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;
char c[1<<22];
vector<int>gt(){
	scanf("%s",c+1);
	vector<int>a(n);a[s=0]=1;
	f(i,1,n)if((c[i]^c[i-1])&1)(a[s]==(l=(i-a[s])%m+a[s])&&s)?(a[s--]=0):(a[++s]=l);
	return a;
}
signed main(){
	cin>>n>>m;n+=9;
	puts(gt()==gt()?"Yes":"No");
	return 0;
}