Problem Statement

For Mr.Rute , a one problem was prepared.

「given a integer $N$. Find the number of pairs of non-negative integers $(i, j, k)$ that satisfy the following conditions.」

contditions
・ $100$ * $i$ + $10$ * $j$ + $1$* $k$ = $N$
・ $j$ is greater than or equal to $i$
・ $k$ is greater than or equal to $j$
・ Easy to say, The following formula must hold
・ Formula $i \leq j \leq k$

Making a Program and culculate the number of pairs of non-negative integers $(i,j,k)$

Constraints

$1 \leq N \leq 1000$

Input

$N$

Output

Please Output the number of pairs of non-negative integers $(i,j,k)$

Sample

11

2

When $N = 11$ , $(i,j,k) = (0,1,1)$ and $(i,j,k) = (0,0,11)$ are meet the conditions

76

7

For Example、When $(i,j,k) = (0,7,6)$,The condition is not met.

188

26

1000

460