p1: really annoying to read again and again, and the sample once again is working multiple time before input file is working
p2:
reverse to get the number start from 0 and add 0-7 to get the number.
hardcode for this program, amend your accordingly
2,4,1,1,7,5,4,7,1,4,0,3,5,5,3,0
based on past experience, i believe all ppl have similar pattern
