题目链接:http://acm.swust.edu.cn/problem/801/ Time limit(ms): 1000 Memory limit(kb): 10000   Description Consider the set of all reduced fractions between 0 and 1 inclusive with denominators less than or equal to N. Here is the set when N = 5: 0/1 1/5 1/…

P1458 顺序的分数 Ordered Fractions 151通过 203提交 题目提供者该用户不存在 标签USACO 难度普及- 提交  讨论  题解 最新讨论 暂时没有讨论 题目描述 输入一个自然数N,对于一个最简分数a/b(分子和分母互质的分数),满足1<=b<=N,0<=a/b<=1,请找出所有满足条件的分数. 这有一个例子,当N=5时,所有解为: 0/1 1/5 1/4 1/3 2/5 1/2 3/5 2/3 3/4 4/5 1/1 给定一个自然数N,1<=n&…

题目链接:http://acm.swust.edu.cn/problem/code/745255/ Time limit(ms): 1000 Memory limit(kb): 65535   Description 以下方法称为最小代价的字母树:给定一正整数序列,例如:4,1,2,3,在不改变数的位置的条件下把它们相加,并且用括号来标记每一次加法所得到的和. 例如:((4+1)+ (2+3))=((5)+(5))=10.除去原数不4,1,2,3之外,其余都为中间结果,如5,5,10,将中间结果…

题目链接:http://acm.swust.edu.cn/problem/649/ Time limit(ms): 1000 Memory limit(kb): 65535 Consider two teams, Lakers and Celtics, playing a series of NBA Finals until one of the teams wins n games. Assume that the probability of Lakers winning a game is…

P1458 顺序的分数 Ordered Fractions 题目描述 输入一个自然数N,对于一个最简分数a/b(分子和分母互质的分数),满足1<=b<=N,0<=a/b<=1,请找出所有满足条件的分数. 这有一个例子,当N=5时,所有解为: 0/1 1/5 1/4 1/3 2/5 1/2 3/5 2/3 3/4 4/5 1/1 给定一个自然数N,1<=n<=160,请编程按分数值递增的顺序输出所有解. 注:①0和任意自然数的最大公约数就是那个自然数②互质指最大公约数等于…

Ordered Fractions Consider the set of all reduced fractions between 0 and 1 inclusive with denominators less than or equal to N. Here is the set when N = 5: 0/1 1/5 1/4 1/3 2/5 1/2 3/5 2/3 3/4 4/5 1/1 Write a program that, given an integer N between…

P1458 顺序的分数 Ordered Fractions 题目描述 输入一个自然数N,对于一个最简分数a/b(分子和分母互质的分数),满足1<=b<=N,0<=a/b<=1,请找出所有满足条件的分数. 这有一个例子,当N=5时,所有解为: 0/1 1/5 1/4 1/3 2/5 1/2 3/5 2/3 3/4 4/5 1/1 给定一个自然数N,1<=n<=160,请编程按分数值递增的顺序输出所有解. 注:①0和任意自然数的最大公约数就是那个自然数②互质指最大公约数等于…

NBA Finals(0649) Time limit(ms): 1000 Memory limit(kb): 65535 Submission: 404 Accepted: 128   Description   Consider two teams, Lakers and Celtics, playing a series of NBA Finals until one of the teams wins n games. Assume that the probability of Lak…

解题思路:http://acm.swust.edu.cn/problem/1023/ Time limit(ms): 5000 Memory limit(kb): 65535     Description BH is in a maze,the maze is a matrix,he wants to escape!   Input The input consists of multiple test cases. For each case,the first line contains…

题目链接:http://acm.swust.edu.cn/problem/1125/ Time limit(ms): 1000 Memory limit(kb): 65535   Description 哈特13最近在学习数论问题,然后他智商太低,并学不懂.这不,他又碰到不会的题了.题意非常简单: 有n个数字,求出这些数字中两两最大公约数的最大值.你一定要帮助他解决这个问题啊. Input 多组输入,约25组,直到文件末尾.每组数据占2行,第一行为数字个数n,2<=n<=100000第二行即为…