#include <bits/stdc++.h>
using namespace std;
int n;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int a, b, c;
  cin >> a >> b >> c;
  if (b >= a && c >= a)
    cout << "YES\n";
  else
    cout << "NO\n";
  return 0;
}
