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