birth = input()
birth = birth.split(',')
#将输入(birth)按逗号隔开的字符串,变成列表
#例如 birth = '1992,12,5' ---> birth = ['1992','12','5']
birth = [int(x) for x in birth]
#列表解析,将birth列表变为数组
#例如 birth = ['199
birth = input()
birth = birth.split(',')
#将输入(birth)按逗号隔开的字符串,变成列表
#例如 birth = '1992,12,5' ---> birth = ['1992','12','5']
birth = [int(x) for x in birth]
#列表解析,将birth列表变为数组
#例如 birth = ['199