#t412. 买书
买书
Buying Books
Background
Special for beginners, ^_^
Problem Description
Xiao Ming has yuan and uses all of it to buy books. The book prices are yuan, yuan, yuan, and yuan.
How many ways can Xiao Ming buy books? (Each kind of book may be bought multiple copies.)
Input Format
An integer , the total amount of money ().
Output Format
An integer: the number of ways to choose.
Sample Input 1
20
Sample Output 1
2
Sample Input 2
15
Sample Output 2
0
Sample Input 3
0
Sample Output 3
0
Constraints
1s, 1024KiB for each test case.