#include <bits/stdc++.h>
using namespace std;
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  ;
  long long n, m, k;
  cin >> n >> m >> k;
  if (min(m, k) < n)
    cout << "No";
  else
    cout << "Yes";
}
