Clever Berlin

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Berlin got bored and decided to solve a puzzle. He has two strings $A$ and $B$ of uppercase alphabets and he has to check whether the two strings are made of same alphabets or not. He solved the puzzle within seconds and now he challenged you to program a solution in your favorite language. Output `YES` if they are made of same alphabets else `NO`. Note that the strings may have different

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solution.cppC++17

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