CF897B.Chtholly's request

普及/提高-

通过率:0%

AC君温馨提醒

该题目为【codeforces】题库的题目,您提交的代码将被提交至codeforces进行远程评测,并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供,我们无法保证该服务的稳定性,若提交后无反应,请等待一段时间后再进行重试。

题目描述

— Thanks a lot for today.— I experienced so many great things.

— You gave me memories like dreams... But I have to leave now...

— One last request, can you...

— Help me solve a Codeforces problem?

— ......

— What?

Chtholly has been thinking about a problem for days:

If a number is palindrome and length of its decimal representation without leading zeros is even, we call it a zcy number. A number is palindrome means when written in decimal representation, it contains no leading zeros and reads the same forwards and backwards. For example 12321 and 1221 are palindromes and 123 and 12451 are not. Moreover, 1221 is zcy number and 12321 is not.

Given integers kk and pp , calculate the sum of the kk smallest zcy numbers and output this sum modulo pp .

Unfortunately, Willem isn't good at solving this kind of problems, so he asks you for help!

输入格式

The first line contains two integers kk and pp (1<=k<=105,1<=p<=109)(1<=k<=10^{5},1<=p<=10^{9}) .

输出格式

Output single integer — answer to the problem.

输入输出样例

  • 输入#1

    2 100
    

    输出#1

    33
    
  • 输入#2

    5 30
    

    输出#2

    15
    

说明/提示

In the first example, the smallest zcy number is 1111 , and the second smallest zcy number is 2222 .

In the second example, .

首页