#include <bits/stdc++.h>
using namespace std;
using pss = pair<string, string>;
using pll = pair<long long, long long>;
const long long mod = 1 * 1e18 + 7;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  ;
  long long i, j, n, k, t, m;
  long long tot = 0, var = 0, flag = 0;
  cin >> n >> m >> k;
  if (m >= n && k >= n)
    cout << "YES\n";
  else
    cout << "NO\n";
  return 0;
}
