Lucky Seven

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Chef considers the number $7$ lucky. As a result, he believes that the $7$-th letter he sees on a day is his *lucky letter* of the day. You are given a string $S$ of length $10$, denoting the first $10$ letters Chef saw today. What is Chef's *lucky letter*? ### Input - The only line of input contains a string $S$, of length $10$. ### Output - Print a single character: Chef's lucky letter . #

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solution.cppC++17

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