摘要：
JATC loves Banh mi (a Vietnamese food). His affection for Banh mi is so much that he always has it for breakfast. This morning, as usual, he buys a Ba 阅读全文
摘要：
JATC and his friend Giraffe are currently in their room, solving some problems. Giraffe has written on the board an array a1, a2, ..., an of integers, 阅读全文