str1=input()
l = str1.split(',')
print('%s,%s'%(l[1],l[0]))

# str1=input()
# l = str1.split(',')
# str1=''+l[1]+','+l[0]
# print(str1)

/**************************************************************
	Problem: 1116
	User: admin
	Language: Python
	Result: Accepted
	Time:91 ms
	Memory:34244 kb
****************************************************************/