#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic pop
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

bool solve() {
  int n;
  cin >> n;
  int a[6];
  rep(i, 6) cin >> a[i];
  if (n <= 2) {
    return false;
  }
  rep(i, 6) if (i != 2) if (a[i] == a[2]) {
    return false;
  }
  if (a[5] == a[0]) return false;
  return true;
}

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout << (solve() ? "YES\n" : "NO\n");
}