在每行和列中查找第二大数字的总和

def find_second_largest_sum(matrix):
    row_sum = 0
    col_sum = 0

    # 遍历每一行
    for row in matrix:
        max_num = float('-inf')
        second_max_num = float('-inf')
        for num in row:
            if num > max_num:
                second_max_num = max_num
                max_num = num
            elif num > second_max_num:
                second_max_num = num
        row_sum += second_max_num

    # 遍历每一列
    for col in range(len(matrix[0])):
        max_num = float('-inf')
        second_max_num = float('-inf')
        for row in range(len(matrix)):
            num = matrix[row][col]
            if num > max_num:
                second_max_num = max_num
                max_num = num
            elif num > second_max_num:
                second_max_num = num
        col_sum += second_max_num

    return row_sum + col_sum