[理工] [離散] 鴿籠原理
show that in a sequence of n^2 + 1 distinct integers,
there is either an increasing subsequence of length n+1
or a decreasing subsequence of length n+1
請問這題該怎麼證明呢?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 61.228.29.167
推
08/01 20:43, , 1F
08/01 20:43, 1F
推
08/01 20:46, , 2F
08/01 20:46, 2F
推
08/01 22:04, , 3F
08/01 22:04, 3F
討論串 (同標題文章)