Напишите программу, которая заполняет квадратную матрицу случайными числами

A = []
N = 4
M = 4
for i in range(N):
  A.append ( [0]*M )
import random
for i in range(N):
    for j in range(M):
        A[i][j] = random.randint(10, 100)
        print("{:4d}".format(A[i][j]),
                        end = "")
    print()
amax = A[0][0]
amin = A[0][0]
imin = 0
imax = 0
jmin = 0
jmax = 0
for i in range(N):
    for j in range(M):

amax = A[0][0]
amin = A[0][0]
imin = 0
imax = 0
jmin = 0
jmax = 0
for i in range(N):
    for j in range(M):
        if A[i][j] > amax:
            amax=A[i][j]
            imax=i
            jmax=j
        if A[i][j] < amin:
            amin=A[i][j]
            imin=i
            jmin=j

from random import randint
 
MIN_VAL = 10
MAX_VAL = 99
n = int(input('n = '))
matr = [[randint(MIN_VAL, MAX_VAL) for _ in range(n)] for _ in range(n)]
print(*matr, sep='\n')
 
pos_mi = 0,0
pos_ma = 0,0
for i in range(len(matr)):
    for j in range(len(matr[0])):
        cur_val = matr[i][j]
        ii,jj = pos_ma
        if cur_val > matr[ii][jj]:
            pos_ma = [i,j]
        ii,jj = pos_mi
        if cur_val < matr[ii][jj]:
            pos_mi = [i,j]
 
i,j = pos_ma
print(f'\nМаксимальный элемент A{pos_ma} = {matr[i][j]}')
i,j = pos_mi
print(f'Минимальный элемент A{pos_mi} = {matr[i][j]}')