Problem UVALive - 3713 - Astronauts Time Limit: 3000 mSec Problem Description Input The input contains several blocks of test cases. Each case begins with a line containing two integers 1 ≤ n ≤ 100000 and 1 ≤ m ≤ 100000. The number n is the number…
Description Katu Puzzle is presented as a directed graph G(V, E) with each edge e(a, b) labeled by a boolean operator op (one of AND, OR, XOR) and an integer c (0 ≤ c ≤ 1). One Katu is solvable if one can find each vertex Vi a value Xi (0 ≤ Xi ≤ 1) s…
In this lesson you will learn to describe an experience. 本课将会学习描述一次经历 课上内容(Lesson) 词汇(Key Word ) # 常用词汇现在时态(present tense) to 过去形式(past forms) cut -> cut hit -> hit hurt -> hurt lend -> lent send -> sent spend -> spent # 注意…