PS1
Problems
A. Truls' Troubles
This is an easy problem. Nothing much to say.
B. Guillaume
Just pay attention to the edge case, when there the input is AAA, the output should be 0-1, same when the input is AAADDD, etc, the output should also be 0-1.
C. Skattareiknivel
This is again a very basic problem. It just the problme statement is a bit too long. Spend some time understading it.
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