[HackerEarth] Today Oz is playing with colorful balls. He has A red balls, B blue balls, C green balls and D yellow balls. Using the balls, he wants to make a colorful straight line such that no tw - 题解

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题目信息
题号 P20472
标题 [HackerEarth] Today Oz is playing with colorful balls. He has A red balls, B blue balls, C green balls and D yellow balls. Using the balls, he wants to make a colorful straight line such that no tw
难度 普及-
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