Multidimensional_list

# Multidimensional_list
# Even_matrix
row = int(input())

matrix = []

for row_index in range(row):
    inner_list = [int(el) for el in input().split(", ") if int(el) % 2 == 0]
    matrix.append(inner_list)

print(matrix)

# Flattening_matrix
row = int(input())

flatten = []

for _ in range(row):
    inner_list = [int(el) for el in input().split(', ')]
    flatten.extend(inner_list)


print(flatten)

# Primary_diagonal
rows = int(input())

matrix = []

for _ in range(rows):
    inner_list = [int(el) for el in input().split()]
    matrix.append(inner_list)

sum_diagonal = 0
for index in range(rows):
    sum_diagonal += matrix[index][index]

print(sum_diagonal)

# Square_with_maximum_sum
rows, cols = [int(el) for el in input().split(", ")]

matrix = []

for _ in range(rows):
    inner_list = [int(el) for el in input().split(", ")]
    matrix.append(inner_list)


max_sum = float('-int')
sub_matrix = []

for row_index in range(rows-1):
    for col_index in range(cols-1):
        current_element = matrix[row_index][col_index]
        element_below = matrix[row_index + 1][col_index]
        next_element = matrix[row_index][col_index + 1]
        diagonal_element = matrix[row_index + 1][col_index + 1]
        current_sum_elements = current_element + element_below + next_element + diagonal_element

        if max_sum < current_sum_elements:
            max_sum = current_sum_elements
            sub_matrix = [[current_element, next_element], [element_below, diagonal_element]]

print(*sub_matrix[0])
print(*sub_matrix[1])
print(max_sum)

# Sum_matrix_columns
rows, cols = [int(el) for el in input().split(", ")]

matrix = []

for _ in range(rows):
    inner_list = [int(el) for el in input().split()]
    matrix.append(inner_list)

col_sums = []
for col_index in range(cols):
    sum_col_elements = 0
    for row_index in range(rows):
        sum_col_elements += matrix[row_index][col_index]
    col_sums.append(sum_col_elements)

for col_sum in col_sums:
    print(col_sum)

# Sum_matrix_elements
# Брой редове
# брой колони
# Четем данните за редове и колони
rows, cols = [int(el) for el in input().split(", ")]

matrix = []


for _ in range(rows):
    inner_list = [int(el) for el in input().split(", ")]
    matrix.append(inner_list)


# Взимаме елементите от матрицата
sum_nums = 0
for row_index in range(rows):
    for col_index in range(cols):
        sum_nums += matrix[row_index][col_index]

print(sum_nums)
print(matrix)

# TODO Solution 2
# Четем данните за редове и колони
rows, cols = [int(el) for el in input().split(", ")]

matrix = []


for _ in range(rows):
    inner_list = [int(el) for el in input().split(", ")]
    sum_nums += sum(inner_list)
    matrix.append(inner_list)



print(sum_nums)
print(matrix)

# Symbol_in_matrix
def find_element_in_matrix(matrix, element):
    for row_index in range(n):
        for col_index in range(n):
            if matrix[row_index][col_index] == element:
                return (row_index, col_index)


n = int(input())

matrix = []

for _ in range(n):
    inner_list = list(input())  # List ot characters
    matrix.append(inner_list)

searched_symbol = input()
position = find_element_in_matrix(matrix, searched_symbol)

if position:
    print(position)
else:
    print(f"{searched_symbol} does not occur in the matrix")