Some strange is happening here
WTF? Are we back in 1990s?
https://ibb.co/0nR0K5S
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Kattis problemset
This
I know that we can do it with a rough decision, but do we have some optimal way to solve it?
Starting one by one from all o, A, B, C, D, ., and running bfs to four way, and saving their distance.
o, A, B, C, D, .
I'm learning C++
Hello World!
Codeforces Round 946 Solution Discussion