Can anyone please provide some problems that involve the concept of fundamental circuits. As of now I only know 2 such problems:<br>↵
[Xortest Path](https://www.codechef.com/SNFL16MR/problems/XORPATH)<br>↵
[Xor-matic Number of the Graph](http://mirror.codeforces.com/problemset/problem/724/G)↵
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[Xortest Path](https://www.codechef.com/SNFL16MR/problems/XORPATH)<br>↵
[Xor-matic Number of the Graph](http://mirror.codeforces.com/problemset/problem/724/G)↵
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