40-49

Array ( [0] => 2 [1] => -15 [2] => -30 )
Array ( [0] => 2 [1] => -15 [2] => 225 [3] => -30 [4] => 900 )

Array ( [0] => 2 [1] => -2 [2] => 2 [3] => -1 [4] => 2 [5] => -2 )
Не образуют последовательность

Array ( [0] => 0 [1] => 4 [2] => 8 [3] => 8 [4] => 10 [5] => -8 )
Положительный массив
Array ( [0] => 0 [1] => 4 [2] => 8 [3] => 8 [4] => 10 )
Отрицательный массив
Array ( [0] => -8 )

Array ( [0] => 3 [1] => 9 [2] => 5 [3] => -9 [4] => 7 [5] => 5 )
Array ( [0] => 3 [1] => 9 [2] => 5 [3] => -9 [4] => 7 [5] => 5 [6] => -5 [7] => -5 [8] => -7 [9] => -4 )

Array ( [0] => 0 [1] => 3 [2] => -9 [3] => -2 [4] => -3 [5] => 3 )
Сумма отрицательных элементов =14
Сумма положительных элементов =6
Нужно добавить:14-6= 8
Array ( [0] => 0 [1] => 3 [2] => -9 [3] => -2 [4] => -3 [5] => 3 [6] => 8 )

Array ( [0] => -5 [1] => 10 [2] => -9 [3] => -5 [4] => 4 [5] => 10 )
Array ( [0] => -7 [1] => 14 [2] => -12.6 [3] => -7 [4] => 5.6 [5] => 14 )

Array ( [0] => -2 [1] => -3 [2] => 0 [3] => 3 [4] => -1 [5] => -4 )
Не идут