#include <bits/stdc++.h>
using namespace std;
const int N = 1000;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int n, m, k;
  cin >> n >> m >> k;
  if (m < n || k < n)
    cout << "No";
  else
    cout << "Yes";
}
