SPOJ上的每个题目都做得我泪牛满面. 这个题目也是的.题目意思是给你两个分数a/b和c/d,要你求出一个分数p/q,使得a/b<p/q<c/d,且p最小. 看完题目后半天都没有任何思路哦.于是无奈只好去网上找题解咯. 终于找到一个神牛的题解,并且自己终于把那个东西给看懂了. 下面写下我自己的理解吧. 首先对于我们不要急于求分子,我们只要求出分母q,分子就可以直接用q*a/b+1表示了(想想为什么呢?因为要最小的). 那么要求这个分母,首先把第一个分数变成0-1之间,即k=a/b,a-=b*k…

连分数乱搞,我反正是一眼没看出结果 某巨巨把这题讲解的比较详细 : http://blog.csdn.net/gogdizzy/article/details/8727386 令k = [a/b] 然后对于a/b < p/q < c/d 就能得到 (a-bk)/b < (p-qk)/q < (c-dk)/d  即 a'/b < p'/q < c'/d ----------------------每项都是<1的 因为显然 a/b < 1 这时如果c/d>…

Many students cruise along just fine in math until fourth grade or so. Then, they hit a wall -- fractions. cruise:巡航,巡游,漫游 fraction:分数,片段The wall is about to get taller. With mastery of the topic seen as a crucial stepping stone to progressing in mat…

传送门 Description Vladik and Chloe decided to determine who of them is better at math. Vladik claimed that for any positive integer n he can represent fraction   as a sum of three distinct positive fractions in form . Help Vladik with that, i.e for a g…

题目链接: Finding Hotels Time Limit: 2000/1000 MS (Java/Others)     Memory Limit: 102400/102400 K (Java/Others) Problem Description There are N hotels all over the world. Each hotel has a location and a price. M guests want to find a hotel with an accept…

D. On Sum of Fractions Let's assume that v(n) is the largest prime number, that does not exceed n; u(n) is the smallest prime number strictly greater than n. Find . Input The first line contains integer t (1 ≤ t ≤ 500) — the number of testscases. Eac…

Fun With Fractions Time Limit: 1000ms, Special Time Limit:2500ms, Memory Limit:65536KB Total submit users: 152, Accepted users: 32 Problem 12878 : No special judgement Problem description A rational number can be represented as the ratio of two integ…

原文 Finding the Best Programmer's Font…

Octal Fractions Time Limit: 1 Sec  Memory Limit: 64 MBSubmit: 149  Solved: 98 Description Fractions in octal (base 8) notation can be expressed exactly in decimal notation. For example, 0.75 in octal is 0.963125 (7/8 + 5/64) in decimal. All octal num…

Octal Fractions Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 6669   Accepted: 3641 Description Fractions in octal (base 8) notation can be expressed exactly in decimal notation. For example, 0.75 in octal is 0.953125 (7/8 + 5/64) in d…