A9298 | Fox and Perfect Sets
时间限制1s
内存限制256MB
通过 / 提交0/0
题目描述
Fox Ciel studies number theory.
She thinks a non-empty set $S$ contains non-negative integers is perfect if and only if for any  ( $a$ can be equal to $b$ ), . Where operation $xor$ means exclusive or operation (http://en.wikipedia.org/wiki/Exclusive\_or).
Please calculate the number of perfect sets consisting of integers not greater than $k$ . The answer can be very large, so print it modulo $1000000007$ $(10^{9}+7)$ .
She thinks a non-empty set $S$ contains non-negative integers is perfect if and only if for any  ( $a$ can be equal to $b$ ), . Where operation $xor$ means exclusive or operation (http://en.wikipedia.org/wiki/Exclusive\_or).
Please calculate the number of perfect sets consisting of integers not greater than $k$ . The answer can be very large, so print it modulo $1000000007$ $(10^{9}+7)$ .
输入格式
The first line contains an integer $k$ ( $0<=k<=10^{9}$ ).
输出格式
Print a single integer — the number of required sets modulo $1000000007$ $(10^{9}+7)$ .
输入输出样例
输入 #1
1
输出 #1
2
输入 #2
2
输出 #2
3
输入 #3
3
输出 #3
5
输入 #4
4
输出 #4
6
In example 1, there are 2 such sets: {0} and {0, 1}. Note that {1} is not a perfect set since 1 xor 1 = 0 and {1} doesn't contain zero.
In example 4, there are 6 such sets: {0}, {0, 1}, {0, 2}, {0, 3}, {0, 4} and {0, 1, 2, 3}.
In example 4, there are 6 such sets: {0}, {0, 1}, {0, 2}, {0, 3}, {0, 4} and {0, 1, 2, 3}.
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