A12072 | Equations of Mathematical Magic
时间限制1s
内存限制256MB
通过 / 提交0/0
题目描述
Colossal! — exclaimed Hawk-nose. — A programmer! That's exactly what we are looking for.
Arkadi and Boris Strugatsky. Monday starts on Saturday
Reading the book "Equations of Mathematical Magic" Roman Oira-Oira and Cristobal Junta found an interesting equation: $a - (a \oplus x) - x = 0$ for some given $a$ , where $\oplus$ stands for a bitwise exclusive or (XOR) of two integers (this operation is denoted as ^ or xor in many modern programming languages). Oira-Oira quickly found some $x$ , which is the solution of the equation, but Cristobal Junta decided that Oira-Oira's result is not interesting enough, so he asked his colleague how many non-negative solutions of this equation exist. This task turned out to be too difficult for Oira-Oira, so he asks you to help.
Arkadi and Boris Strugatsky. Monday starts on Saturday
Reading the book "Equations of Mathematical Magic" Roman Oira-Oira and Cristobal Junta found an interesting equation: $a - (a \oplus x) - x = 0$ for some given $a$ , where $\oplus$ stands for a bitwise exclusive or (XOR) of two integers (this operation is denoted as ^ or xor in many modern programming languages). Oira-Oira quickly found some $x$ , which is the solution of the equation, but Cristobal Junta decided that Oira-Oira's result is not interesting enough, so he asked his colleague how many non-negative solutions of this equation exist. This task turned out to be too difficult for Oira-Oira, so he asks you to help.
输入格式
Each test contains several possible values of $a$ and your task is to find the number of equation's solution for each of them. The first line contains an integer $t$ ( $1 \le t \le 1000$ ) — the number of these values.
The following $t$ lines contain the values of parameter $a$ , each value is an integer from $0$ to $2^{30} - 1$ inclusive.
The following $t$ lines contain the values of parameter $a$ , each value is an integer from $0$ to $2^{30} - 1$ inclusive.
输出格式
For each value of $a$ print exactly one integer — the number of non-negative solutions of the equation for the given value of the parameter. Print answers in the same order as values of $a$ appear in the input.
One can show that the number of solutions is always finite.
One can show that the number of solutions is always finite.
输入输出样例
输入 #1
3 0 2 1073741823
输出 #1
1 2 1073741824
Let's define the bitwise exclusive OR (XOR) operation. Given two integers $x$ and $y$ , consider their binary representations (possibly with leading zeroes): $x_k \dots x_2 x_1 x_0$ and $y_k \dots y_2 y_1 y_0$ . Here, $x_i$ is the $i$ -th bit of the number $x$ and $y_i$ is the $i$ -th bit of the number $y$ . Let $r = x \oplus y$ be the result of the XOR operation of $x$ and $y$ . Then $r$ is defined as $r_k \dots r_2 r_1 r_0$ where:
$$$$ r_i = \left\{ \begin{aligned} 1, ~ \text{if} ~ x_i \ne y_i \\ 0, ~ \text{if} ~ x_i = y_i \end{aligned} \right. $$ </p><p>For the first value of the parameter, only $x = 0$ is a solution of the equation.</p><p>For the second value of the parameter, solutions are $x = 0$ and $x = 2$$$.
$$$$ r_i = \left\{ \begin{aligned} 1, ~ \text{if} ~ x_i \ne y_i \\ 0, ~ \text{if} ~ x_i = y_i \end{aligned} \right. $$ </p><p>For the first value of the parameter, only $x = 0$ is a solution of the equation.</p><p>For the second value of the parameter, solutions are $x = 0$ and $x = 2$$$.
C++ 编辑器
输入
输出
可保存默认模板;新题优先使用已保存模板。
当前快捷键仅展示,暂不支持修改。
- 撤销
Ctrl / ⌘ + Z - 重做
Ctrl / ⌘ + Y - 查找
Ctrl / ⌘ + F - 全选
Ctrl / ⌘ + A - 复制
Ctrl / ⌘ + C - 剪切
Ctrl / ⌘ + X - 粘贴
Ctrl / ⌘ + V - 自动排版
工具栏排版按钮 - 草稿保存
编辑时自动保存到本机
历史
提交记录
状态说明时间源码
AI
作答助手
你好,我是作答助手。可以问思路、复杂度、样例含义或代码报错原因;不会直接给出完整 AC 代码。
确定要清空代码吗?
提交通过
评测结果:Accepted