20250419

# a,b = map(int,input().split('x'))
# c = (-b)/a
# print('%.2f'%c)

# a, temp = input().split('x')
# b, c = map(int,temp.split('='))
# a = int(a)
# d = (c-b)/a
# print('%.2f'%d)

# a = input()
# b,c,d = input().split()
# for x in b :
#     e = a.index(x)
#     print(e,end='')
# print(' ',end='')
# for x in c :
#     f = a.index(x)
#     print(f,end='')
# print(' ',end='')
# for x in d :
#     g = a.index(x)
#     print(g,end='')

# 011B1C11A122B11A
# a = []
# 111

# a = input()
# b = []
# for x in a :
#     if x=='0' or x=='1' or x=='2' :
#         b.append(x)
#     elif x=='A' :
#         b.pop()
#     elif x=='B' :
#         b.pop()
#         b.pop()
#     elif x=='C' :
#         b.clear()
# print(''.join(b))

# a = input()
# b = len(a)
# c=10
# for i in range(1,b) :
#     if a[i-1]==a[i] :
#         c+=5
#     else :
#         c+=10
# print(c)

# a = int(input())
# b=(a-4)%10
# c=(a-4)%12+65
# c=chr(c)
# print(c,b,sep='')
'''
a = [1,3,4,2,7]          #1차원 배열
b = [[1,2,3],[4,5,6]]

print(b[0])     [1,2,3]

b[i][j]
        j=0        j=1      j=2
i=0      1          2         3
i=1      4          5         6

        j=0        j=1     j=2      ...  j=5
i=0  b[0][0]    b[0][1]   b[0][2]
i=1  b[1][0]    b[1][1]   b[1][2]
...
i=7                                     b[7][5]

'''

b = [[1,2],[3,4,5],[6,7,8,9]]

# i=0     1 2
# i=1     3 4 5
# i=2     6 7 8 9

# for i in range(len(b)) :
#     for j in range(len(b[i])) :
#         print(b[i][j],end=' ')
#     print()

b = [ [0]*5 ] * 3
print(b)

# b = [ [0 for j in range(5)] for i in range(3)]
# print(b)

# width 너비
# height 높이
# w, h

# b = [ [i*5 for j in range(5)] for i in range(3)]
# for i in range(len(b)) :
#     for j in range(len(b[i])) :
#         print(b[i][j],end=' ')
#     print()
# a = int(input())
# b = [ [i*a+j+1 for j in range(a)] for i in range(a)]
# for i in range(len(b)) :
#     for j in range(len(b[i])) :
#         print(b[j][i],end=' ')
#     print()