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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
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Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
4 days
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Codeforces (c) Copyright 2010-2024 Mike Mirzayanov
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Server time: Nov/26/2024 06:30:32 (k2).
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Supported by
dpA[i] =dpA[i-1] + (s[i]=='A') * numofQ[1,i-1]
dpQ[i]= dpQ[i-1] + (s[i]=='Q') * dpA[i-1]
final answer is dpQ[n]
Your approach is too good
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