'''input

'''
import sys
import math
from bisect import bisect_right, bisect_left
from itertools import *
from collections import *
from heapq import heapify, heappush, heappop
inf = float('inf')
# mod = 1000000007
# mod = 998244353
input = lambda: sys.stdin.readline().rstrip()
def error(*args, end='\n'):
  print(*args, end=end, file=sys.stderr)
# sys.setrecursionlimit(10**6)

##################

i, j, k = map(int, input().split())
print('Yes' if i <= j and i <= k else 'No')