diagonals_matrix

rows = int(input())

matrix = [[int(n) for n in input().split(', ')] for i in range(rows)]

primary_sum = 0
primary = []
secondary_sum = 0
secondary = []
for i in range(rows):
    primary_sum += matrix[i][i]
    primary.append(matrix[i][i])
    for j in range(rows):
        if i+j == rows - 1:
            secondary_sum += matrix[i][j]
            secondary.append(matrix[i][j])

print(f"Primary diagonal: {', '.join([str(n) for n in primary])}. Sum: {primary_sum}")
print(f"Secondary diagonal: {', '.join([str(n) for n in secondary])}. Sum: {secondary_sum}")