# print("jinwoo\ngold2")
# jinwoo = 2
# print(jinwoo)
# # 오늘 수업
# print("Hello World")
# print("Hello" , "World")
# print("Hello")
# print("Hello World")
# print("Hello")
# print("World")
# print("'Hello'")
# print('"Hello World"')
# print("\"!@#$%^&*()'")
# print('"C:\Download\'hello\'.py"')\\\
# 변수의 종류 : 정수, 실수, 문자열, 문자
# int float str chr
# a,b = input().split()
# b = int(b)
# print(a,b)
# print('print("Hello\\nWorld")')
# a = input()
# print(a)
#
# n = input()
# n = int(n)
# print(n)
# f = input()
# f = float(f)
# print(f)
# a = input()
# b = input()
# print(b)
# print(a)
# f = input()
# f = float(f)
# print(f)
# print(f)
# print(f)
# a,b = input().split()
# # a = int(a)
# # b = int(b)
# # print(a)
# # print(b)
# a,b = input().split()
# print(b,a)
# a = input()
# print(a, a, a)
# a,b = input().split(':')
# print(a, b, sep=':')
# y,m,d = input().split('.')
# print(d, m, y, sep='-')
# a,b = input().split('-')
# print(a,b,sep='')
# a,b = input().split('-')
# print(a+b)
# # split : 어떤 문자열을 구분해서 리스트로 반환
# a, b = 'aaa ddd'.split()
# print(a,b,end='@')
# s = input()
# print(s[0])
# print(s[1])
# print(s[2])
# print(s[3])
# print(s[4])
# s = ['a','b','c']
# print(s[0:2])
# s = input()
# print(s[0:2], s[2:4], s[4:6])
# h,m,s = input().split(':')
# print(m)
# a,b = input().split()
# s = a+b
# print(s)
a = map(int, input().split())