To Who do not know the meaning of N and K

Posted by

an phan 25 Apr 2014 23:04

I got AC with 0.015s,216Kb

I had read the problem several time until understand.

N is the length of the digit number.

It will be something like that

a1 a2 a3 ...an

for each ai in a1 a2 a3..an, 0 <= ai < K.

The output number i used was interger (compiler C++ 2010). (no big number).

hope it can help you.

And sorry for my poor English.

*Edited by author 25.04.2014 23:05*

Re: To Who do not know the meaning of N and K

thanks an phan. through your post, i have understanded a bit. but why K = 10. when a1 a2 a3....an <10 and lager or equal 0. i thinks result = 99. why 90? i suspect it? Thanks you so muck.

Re: To Who do not know the meaning of N and K

From task:

> 0001235 is not a 7-digit number, it is a 4-digit number.

So first zero isn't allowed. So,

0 < a1 < 10

0 <= a2...an < 10

Result is 9*10 = 90

Re: To Who do not know the meaning of N and K

Maybe you just thought "00" is not the valid number, but the problem said "0001235 is not a 7-digit number, it is a 4-digit number. ", that means 01, 02...09 are not 2-digit numbers, they are 1-digit numbers, so the answer should be 90.

Re: To Who do not know the meaning of N and K

Dear anphan . Your question is jam <3 <3<3