# print('print(\"Hello\\nWorld\")')
# a,b = input().split()
# print(b,a)
# a,b = input().split(':')
# a = int(a)
# b = int(b)
# print(a,b,sep=':')
# y, m, d = input().split('.')
# print(d, m, y, sep='-')
# s[a:b] = a ~ b-1 까지의 배열 값
# a, b = input().split('-')
# print(a, b, sep='')
# n = input()
# print(n[0])
# print(n[1])
# print(n[2])
# print(n[3])
# print(n[4])
# YYMMDD = input()
# print(YYMMDD[0:2], YYMMDD[2:4], YYMMDD[4:6])
# a, b, c = input().split(':')
# print(b)
### 변수 타입
# int, float, string(문자열)
# -> int, float, str
# 형변환 : ex. a = 10 -> str(a)
# input -> str
# input : 2 3 -> 2 + 3 = 5
# w1 = 'boeing'
# w2 = '777'
# s = w1 + w2
# print(s)
# w1,w2 = input().split()
# s = w1 + w2
# print(s)
# a, b = input().split()
# a = int(a)
# b = int(b)
# print(a+b)
# a = input()
# b = input()
# a = float(a)
# b = float(b)
# print(a+b)