Revision history of "1994 OIM Problems/Problem 3"

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  • (cur | prev) 13:28, 13 December 2023Tomasdiaz (talk | contribs). . (654 bytes) (+654). . (Created page with "== Problem == In each square of an <math>n \times n</math> board there is a lamp. When a lamp is touched, it and all the lamps located in the row and column where that lamp be...")