Chef and Rainbow Array

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Chef likes all arrays equally. But he likes some arrays more equally than others. In particular, he loves Rainbow Arrays. An array is Rainbow if it has the following structure: - First a1 elements equal 1. - Next a2 elements equal 2. - Next a3 elements equal 3. - Next a4 elements equal 4. - Next a5 elements equal 5. - Next a6 elements equal 6. - Next a7 elements equal 7. - Next a6 element

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solution.cppC++17

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