output_description: If the concatenation of a and b in this order is a square number, print `Yes`;
  otherwise, print `No`.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      a b
attempt: # coding: utf-8
  
  N = input().split(,)
  N_list=list(N)
  
  AA = N_list[0]+N_list[1]
  
  while 10000:
  	q = 0
  	if (q*q)== AA:
  		print("Yes")
  		break
  	elif(q==10000):
  		print("No")
  		break
  	q += 1
  	
  
  
problem_description: Statement
  
  AtCoDeer the deer has found two positive integers, a and b. Determine whether
  the concatenation of a and b in this order is a square number.
samples: [{"input": "1 21", "output": "Yes\n    \n\nAs 121 = 11 \u00d7 11, it is a square number.\n\n* * *"}, {"input": "100 100", "output": "No\n    \n\n100100 is not a square number.\n\n* * *"}, {"input": "12 10", "output": "No"}]