MathForces: Math Olympiads
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Author: mathforces
Problem has been solved: 6 times

Русский язык | English Language

There is a graph with 60 vertices, and each of its edges is colored either pink or green so that there are no monochromatic cycles of length 3 and no monochromatic cycles of length 5 in the graph. What is the maximum number of edges this graph can have?

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