#639. Differences of neighbors
Print the difference of every two neighboring elements (a[i+1] - a[i]).
### Input
The first line has n, the second line has n integers separated by spaces. (n ≥ 2)
### Output
n-1 numbers.
Examples
Input
9 45 40 -29 -42 -9 -41 38 50 3
Output
-5 -69 -13 33 -32 79 12 -47
Input
5 44 -8 10 -32 -42
Output
-52 18 -42 -10
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.