#769. Count the positive solutions of a + b + c = n
Use nested loops to count the **positive solutions of a + b + c = n**.
### Input
One integer (1 ≤ value ≤ 100).
### Output
A number.
Examples
Input
33
Output
496
Input
30
Output
406
💡 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.