6,3,2025

# n = int(input())
# matrix = [list(map(int, input().split(", "))) for _ in range(n)]
# sum_diagonal = sum(matrix[i][i] for i in range(n))
# print(sum_diagonal)


# n = int(input())
# matrix = [list(map(int, input().split(", "))) for _ in range(n)]
# sum_diagonal = sum(matrix[i][n - 1 - i] for i in range(n))
# print(sum_diagonal)


# n = int(input())
# matrix = []
# for _ in range(n):
#     row = list(map(int, input().split(", ")))
#     matrix.append(row)
№
# vtoriqen_diagonal = 0
# for i in range(n):
#     for j in range(i + 1):
#         vtoriqen_diagonal += matrix[i][j]
#
#
# print(vtoriqen_diagonal)


# n = int(input())
# matrix = []
# for _ in range(n):
#     row = list(map(int, input().split(", ")))
#     matrix.append(row)
#
#
# sum_right = 0
# for i in range(n):
#     for j in range(i, n):
#         sum_right += matrix[i][j]
# print(sum_right)

# 10 и 11 задача не мога да ги направя моя да ги обесните заедно с 8 ма