Standard Flag

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According to a new AFGJI standard, a flag of every SCHOOL should have a chequered field n × m, each square should be of one of 10 colours, and the flag should be «striped»: each horizontal row of the flag should contain squares of the same colour, and the colours of adjacent horizontal rows should be different. ABC SCHOOL asked you to find out whether their flag meets the new AFGJI standard. Inpu

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solution.cppC++17

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