#894. Recurrent sequence (×5 + -3)
a₁ = 1, aₙ = aₙ₋₁ · 5 + -3. You get n. Find aₙ.
### Input
One integer n (1 ≤ n ≤ 40).
### Output
A number.
Examples
Input
14
Output
305175782
Input
15
Output
1525878907
💡 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.