Class "Vector" with operator overloading…

Create a class `Vector3D` representing a three-dimensional vector. The class must contain fields X, Y, Z (integers). Implement a constructor that takes three coordinates. Overload the operators: + (vector addition), - (subtraction), * (dot product), and unary minus. In `Main`, read two vectors from the input data (three numbers each separated by a space) and output the result of addition, subtraction, dot product, and also the second vector with unary minus. Each result is printed on a separate line. It is guaranteed that the coordinates are integers from -100 to 100.

Input Format

Two strings. Each string contains three integers separated by spaces — the coordinates of a vector.

Output Format

Four lines: 1) coordinates of the sum of vectors (space-separated); 2) coordinates of the difference (first minus second); 3) dot product (integer); 4) coordinates of the second vector with a unary minus.

Examples

Example 1

INPUT

1 2 3
4 5 6

OUTPUT

5 7 9
-3 -3 -3
32
-4 -5 -6

Example 2

INPUT

5
3 -1 4 -2 6

OUTPUT

Invalid input

Example 3

INPUT

0 0 0
-1 2 5

OUTPUT

-1 2 5
1 -2 -5
0
1 -2 -5

Example 4

INPUT

[{"category":"A","value":10,"active":true},{"category":"B","value":20,"active":true},{"category":"A","value":30,"active":false},{"category":"B","value":25,"active":true}] 15 30

OUTPUT

Invalid input

Example 5

INPUT

3
-5 -10 -15

OUTPUT

Invalid input