CF261C.Maxim and Matrix

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

Maxim loves to fill in a matrix in a special manner. Here is a pseudocode of filling in a matrix of size (m+1)×(m+1)(m+1)×(m+1) :

Maxim asks you to count, how many numbers mm (1<=m<=n)(1<=m<=n) are there, such that the sum of values in the cells in the row number m+1m+1 of the resulting matrix equals tt .

Expression ( xx xorxor yy ) means applying the operation of bitwise excluding "OR" to numbers xx and yy . The given operation exists in all modern programming languages. For example, in languages C++ and Java it is represented by character "^", in Pascal — by "xor".

输入格式

A single line contains two integers nn and tt (1<=n,t<=1012,t<=n+1)(1<=n,t<=10^{12},t<=n+1) .

Please, do not use the %lld specifier to read or write 64-bit integers in C++. It is preferred to use the cin, cout streams or the %I64d specifier.

输出格式

In a single line print a single integer — the answer to the problem.

输入输出样例

  • 输入#1

    1 1
    

    输出#1

    1
    
  • 输入#2

    3 2
    

    输出#2

    1
    
  • 输入#3

    3 3
    

    输出#3

    0
    
  • 输入#4

    1000000000000 1048576
    

    输出#4

    118606527258
    
首页