#include <bits/stdc++.h>
using namespace std;
const int N = 3e5 + 7, M = 2e6;
const long long mod = 1e9 + 7;
inline int read() {
  int ret = 0;
  char ch = getchar();
  bool f = 1;
  for (; !isdigit(ch); ch = getchar()) f ^= !(ch ^ '-');
  for (; isdigit(ch); ch = getchar()) ret = (ret << 1) + (ret << 3) + ch - 48;
  return f ? ret : -ret;
}
long long gcd(long long a, long long b) { return b ? gcd(b, a % b) : a; }
long long ksm(long long a, long long b, long long mod) {
  int ans = 1;
  while (b) {
    if (b & 1) ans = (ans * a) % mod;
    a = (a * a) % mod;
    b >>= 1;
  }
  return ans;
}
long long inv2(long long a, long long mod) { return ksm(a, mod - 2, mod); }
int main() {
  int n, m, k;
  cin >> n >> m >> k;
  if (n <= m && n <= k)
    puts("Yes");
  else
    puts("No");
  return 0;
}
