摘要：题目描述The cows have once again tried to form a startup company, failing to remember from past experience that cows make terrible managers!The cows, conv 阅读全文

摘要：题目描述 Each of Farmer John's N (4 <= N <= 16) cows has a unique serial number S_i (1 <= S_i <= 25,000). The cows are so proud of it that each one now we 阅读全文

摘要：题目描述 Farmer John has installed a new system of N−1N-1N−1 pipes to transport milk between the NNN stalls in his barn (2≤N≤50,0002 \leq N \leq 50,0002≤N 阅读全文