OJ Board

Try these cases:
1
1 2 3
1
1 1 1
0
Answer:
6
1
Yours:
6
6

Got it?
By the way, thanks to your code I could realize my own mistake.

I got AC, but I've found a different word for the input:

zsrqponmlkjihgfedcya
6613313319248080000

My answer:
zysrqponmlkjihgfedc a (additional 'a' at the end of the string)

Since that number is the rank of the last word that can be formed with 20 letters, the answer should be a string with all ...