Exclusive-OR

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3384 [PDF](https://uva.onlinejudge.org/external/122/p12232.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12232/4b4facb160f81ed3646db0c71d5c06271a003888.png)

输入输出格式

输入格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12232/e1367b42c813b4946a7c08c65a3c7861055ab780.png)

输出格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12232/0e769174e3da35db6b73732fd58bc876942f00a4.png)

输入输出样例

输入样例 #1

2 6
I 0 1 3
Q 1 0
Q 2 1 0
I 0 2
Q 1 1
Q 1 0
3 3
I 0 1 6
I 0 2 2
Q 2 1 2
2 4
I 0 1 7
Q 2 0 1
I 0 1 8
Q 2 0 1
0 0

输出样例 #1

Case 1:
I don’t know.
3
1
2
Case 2:
4
Case 3:
7
The first 2 facts are conflicting.