#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, s;
  cin >> n >> s;
  int a[n + 1], b[n + 1];
  bool open = false;
  for (int i = 1; i <= n; i++) {
    cin >> a[i];
  }
  for (int i = 1; i <= n; i++) {
    cin >> b[i];
  }
  if (a[1] == 0)
    cout << "NO";
  else if (a[s] == 1)
    cout << "YES";
  else if (a[s] == 0 && b[s] == 0)
    cout << "NO";
  else if (a[s] == 0 && b[s] == 1) {
    for (int i = s + 1; i <= n; i++)
      if (a[i] == 1 && b[i] == 1) {
        cout << "YES";
        return 0;
      }
    cout << "NO";
  } else
    cout << "NO";
  return 0;
}
