摘要：
Minimum Cost to Split an Array You are given an integer array nums and an integer $k$. Split the array into some number of non-empty subarrays. The co 阅读全文
摘要：
B. Emordnilap A permutation of length $n$ is an array consisting of $n$ distinct integers from $1$ to $n$ in arbitrary order. For example, $[2,3,1,5,4 阅读全文
摘要：
C. Quiz Master A school has to decide on its team for an international quiz. There are $n$ students in the school. We can describe the students using 阅读全文