矩陣相加

 a = input().split(',')

a11,a12 = a[0],a[1]

a = input().split(',')

a21,a22 = a[0],a[1]

b = input().split(',')

b11,b12 = b[0],b[1]

b = input().split(',')

b21,b22 = b[0],b[1]

c11,c12 = int(a11) + int(b11),int(a12)+int(b12)

c21,c22 = int(a21) + int(b21),int(a22)+int(b22)

print(f'[{c11:<4} {c12:4}]')

print(f'[{c21:<4} {c22:4}]')

   

print(f'[{c11:<4} {c12:4}]')

# STDIN

# 1,2

# 3,4

# 5,6

# 7,8

# Output:

# [6       8]

# [10     12]