Write a program that reads sequences of natural numbers, and that for each one prints the number of pairs of consecutive numbers such that the second number of the pair is greater than the first one.

**Input**

Input consists of a natural number *n*,
followed by *n* sequences of strictly positive natural numbers.
Each sequence ends with a zero.

**Output**

For every sequence, print in a line the number of pairs of consecutive numbers such that the second number of the pair is greater than the first one.

Public test cases

**Input**

3 1 2 3 4 0 4 4 3 3 2 2 1 1 0 6 8 4 4 5 0

**Output**

3 0 2

Information

- Author
- Salvador Roura
- Language
- English
- Translator
- Carlos Molina
- Original language
- Catalan
- Other languages
- Catalan
- Official solutions
- C++ Java Python
- User solutions
- C C++ Haskell Java Python