Given 2 numbers N and K followed by elements of N .Print 'yes' if K exists else print 'no'.

N,K=(int(no) for no in input().split())
ele=list(map(int,input().split()))
count=0
i=1
if(i==K):
    for i in range(1,N+1):
      count=count+1
      print("yes")
      break
else:
  print("no")