# import collections
# class Solution(object):
# 	def generateParenthesis(self, n):
# 		self.list = []
# 		r = self._gen(0,0,n,"result")
# 		return self.list

# 	def _gen(self, left, right, n, result):
# 		if left == n and right == n:
# 			self.list.append(result)
# 			print("ok",result)
# 			return
			
# 		if left < n:
# 			self._gen(left+1,right,n,result+"(")
# 		if right < left and right <n:
# 			self._gen(left,right+1,n,result+")")

# s = Solution()
# r = s.generateParenthesis(5)
# print(r)
sot

print("b">"a")