#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("unroll-loops")
using namespace std;
long long md = 1000 * 1000 * 1000 + 7;
long long pw(long long a, long long b) {
  long long c = 1, m = a;
  while (b) {
    if (b & 1) c = (c * m) % md;
    m = (m * m) % md;
    b /= 2;
  }
  return c;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  ;
  int n, m, k;
  cin >> n >> m >> k;
  if (n <= min(m, k))
    cout << "Yes";
  else
    cout << "No";
  return 0;
}
