#include <bits/stdc++.h>
    using namespace std;
    #include <math.h>
    #include <iomanip>
    #include <cstdint>
    #include <string>
    #include <sstream>
    template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
    template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
    #define rep(i,n) for (int i = 0; i < (n); ++i)
    typedef long long ll;
    using P = pair<ll,ll>;
    const int INF=1001001001;
    const int mod=1e9+7;

    int main() {
      int N,X;
      cin>>N>>X;
      vector<int>C(N);
      rep(i,N){cin>>C[i];if(C[i]>=X){cout<<"Yes"<<endl;return 0;}}
      cout<<"No"<<endl;
      return 0;
    }