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An alphabet consists of n letters. What is the maximal length of a word if we know that any two consecutive letters a,b of the word are different and that the word cannot be reduced to a word of the kind abab with a\neq b by removing letters.

Slični zadaci

#NaslovOznakeRj.KvalitetaTežina
1233IMO Shortlist 1966 problem 500
1231IMO Shortlist 1966 problem 480
1229IMO Shortlist 1966 problem 460
1227IMO Shortlist 1966 problem 440
1225IMO Shortlist 1966 problem 420
1223IMO Shortlist 1966 problem 400