# for i in range(50):
# print('print', end ='')
# for i in range(20):
# print('hello', end='')
# print(' ', end='')
# for j in range(30):
# print('world', end='')
# a = input()
# b = input()
# c = input()
# d = input()
# print(a)
# print(b)
# print(c)
# print(d)
# a = input()
# print(a)
# a, b = map(int, input().split())
# print(a+b)
# a, b = map(int, input().split())
# print(a, '+', b, '=', a + b)
# print(a, '-', b, '=', a - b)
# print(a, '*', b, '=', a * b)
# print(a, '/', b, '=', a // b)
# print(a, '%', b, '=', a % b)
# a = int(input())
# print(a*123456789)