23.12.30

# y = int(input())

# y = y % 60

# i = y % 10-1 #십간

# j = y % 12-1 #십이지

# a = [7, 8, 9, 0, 1, 2, 3, 4, 5, 6]

# b = ['J', 'K', 'L', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I']

# print(b[j], end='')

# print(a[i])

# data = int(input())

#

# x = chr((data+8)%12 + ord('A'))

# print(x,end='')

# print((data+6)%10)

# A = 300

# B = 60

# C = 10

# T = int(input())

# if (((T % A) % B) % C) > 0:

# print(-1)

# else:

# print( (int(T / A)), int((T % A) / B), int(((T % A) % B) / C) )

# data1 = 0

# # 변수: variable

#

# data2 = [1, 2, 3]

# # 리스트: list

#

# print(data2[1]) # 1: 두번째, 0부터니까

#

# data2.append(4)

# # data2: [1, 2, 3, 4]

#

# data2.append(5)

# # data2: [1, 2, 3, 4, 5]

#

# data2.append(100)

# # data2: [1, 2, 3, 4, 5, 100]

#

# print(data2)

#

# for i in range(len(data2)):

# # len(data2) : 6

# # 0 ~ (6-1)

# print(data2[i], end='>>>')

#

# data2[i] = 100 - i

# print(data2[i])

# data1 = 0

# data2 = [1, 2, 3]

#

# x = data1

# y = data1

#

# print(data1, x, y)

#

# x = 100

# y = 200

# print(data1, x, y)

#

# import copy

#

# a = copy.deepcopy(data2)

# b = copy.deepcopy(data2)

#

# a[1] = 100

# b[1] = 200

#

# print(data2, a, b)

'''

Inside Computer

# >>> Transfer: Speed

# >>> s1: 100, 100, 100

# >>> s2: 50, 50, 150

10, 20, 30, 40, 50 >> 50 : 100

10, 20, 30 >> 30 : 100

10, 20, ..., 1000 >> 1000 : 100

# >>>>>>>>>>>>> list: 주소 링크

'''

# data = []

#

# for i in range(5):

# v = [0] * 5

# data.append(v)

#

# print(data)

#

# data[2][2] = 5

# print(data)

# n = int(input())

# for i in range(0, n):

# for j in range(1, n+1):

# print(n*i+j, end=' ')

# print()

# n = int(input())

# for i in range(1, n+1):

# for j in range(0, n):

# print(n*i-j, end=' ')

# print()

# n = int(input())

# for i in range(1, n+1):

# for j in range(0, n):

# print(i+j*n, end=' ')

# print()