题目描述
Given an integer $n$, find each $\boldsymbol{x}$ such that:
$0\leq x\leq n$
$n+x=n\oplus x$
where $\oplus$ denotes the bitwise XOR operator. Return the number of $\boldsymbol{x}$'s satisfying the criteria.
Example
$n=4$
There are four values that meet the criteria:
$4+0=4\oplus0=4$
$4+1=4\oplus1=5$
$4+2=4\oplus2=6$
$4+3=4\oplus3=7$
Return $4$.
Function Description
Complete the sumXor function in the editor below.
sumXor has the following parameter(s):
- int n: an integer
Returns
- int: the number of values found
Input Format
A single integer, $n$.
Constraints
$0\leq n\leq10^{15}$
Subtasks
$0\leq n\leq100$ for $\textbf{60\%}$ of the maximum score.
Output Format
Sample Input 0
5
Sample Output 0
2
Explanation 0
For $n=5$, the $\boldsymbol{x}$ values $\mbox{0}$ and $2$ satisfy the conditions:
$5+0=5,\:\:5\oplus0=5$
$5+2=7,\:\:5\oplus2=7$
Sample Input 1
10
Sample Output 1
4
Explanation 1
For $n=10$, the $\boldsymbol{x}$ values $\mbox{0}$, $\mbox{1}$, $4$, and $5$ satisfy the conditions:
$10+0=10,~~10\oplus0=10$
$10+1=11,~~10\oplus1=11$
$10+4=14,~~10\oplus4=14$
$10+5=15,~~10\oplus5=15$
输入格式
见题面
输出格式
见题面