UVA13028 XOR Subset

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4916 [PDF](https://uva.onlinejudge.org/external/130/p13028.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13028/0395c895227d98b21388bec8fab1c562e83cbb63.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13028/87ab57e51f8cd2a7ed7bdf00ea6deea030229087.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13028/9032ac4e5071d11555eaf9b401c1e6e4d94f6031.png)