摘要：
Kolya got an integer array a1,a2,…,an. The array can contain both positive and negative integers, but Kolya doesn't like 0 , so the array doesn't cont 阅读全文
摘要：
Today is Jaime’s birthday and, to celebrate, his friends ordered a cake decorated with eggfruits and persimmons. When the cake arrived, to their surpr 阅读全文