Lucky Toys

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According to a legend, a number is lucky if its first and last digit sum up as an even number. On your birthday, you were gifted with $N$ toys where $i^{th}$ toy was priced at $i$ Rupee. According to the same legend, a toy is lucky if its price is a lucky number. Can you find out the number of lucky toys between $1$ to $N$. ###Input: - The input contains a single integer $N$, the t

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solution.cppC++17

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