#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n, m, k;
  cin >> n >> m >> k;
  if (min(m, k) < n)
    cout << "No\n";
  else
    cout << "Yes\n";
  return 0;
}
