摘要：
Sum of Prefix Scores of Strings You are given an array words of sizeco $n$ sisting of non-empty strings. We define the score of a string word as the n 阅读全文
摘要：
Minimum Money Required Before Transactions You are given a 0-indexed 2D integer array transactions , where transactions[i] = [costi, cashbacki] . The 阅读全文