摘要：
题目： Given any string of N (≥) characters, you are asked to form the characters into the shape of U. For example, helloworld can be printed as: h d e l 阅读全文
摘要：
题目：People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-digit number, w 阅读全文