Diferente pentru blog/square-root-trick intre reviziile #51 si #52

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Being flexible and easy to code, the square root trick is a pretty popular in the Romanian programming contests community. It even has a name: "jmenul lu Batog" which means Batog's trick :). Bogdan Batog introduced it to a few high school students more than 10 years ago and the trick entered romanian coding contest folklore.
Let’s check out a few problems.
Enough introduction, let’s check out a few problems!
h2. Range Sum

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