摘要：
A - Garden Problem Statement There is a farm whose length and width are A yard and B yard, respectively. A farmer, John, made a vertical road and a ho 阅读全文
摘要：
A. Palindromic Twist A. Palindromic Twist You are given a string ss consisting of nn lowercase Latin letters. nn is even. For each position ii (1≤i≤n1 阅读全文