Strange Way to Express Integers Description Elina is reading a book written by Rujia Liu, which introduces a strange way to express non-negative integers. The way is described as following: Choose k different positive integers a1, a2, …, ak. For some
Two Arithmetic Progressions 题目链接: http://codeforces.com/contest/710/problem/D Description You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some inte
Hello Kiki Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 247 Accepted Submission(s): 107 Problem Description One day I was shopping in the supermarket. There was a cashier counting coins serio
X问题 Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3921 Accepted Submission(s): 1253 Problem Description 求在小于等于N的正整数中有多少个X满足:X mod a[0] = b[0], X mod a[1] = b[1], X mod a[2] = b[2], …, X mod
Counting Binary Trees Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 564 Accepted Submission(s): 184 Problem Description There are 5 distinct binary trees of 3 nodes: Let T(n) be the number
http://poj.org/problem?id=2891 Strange Way to Express Integers Time Limit: 1000MS Memory Limit: 131072K Total Submissions: 11970 Accepted: 3788 Description Elina is reading a book written by Rujia Liu, which introduces a strange way to express no
http://acm.hdu.edu.cn/showproblem.php?pid=1573 X问题 Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4439 Accepted Submission(s): 1435 Problem Description 求在小于等于N的正整数中有多少个X满足:X mod a[0] = b[0],
Biorhythms Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 103539 Accepted: 32012 Description Some people believe that there are three cycles in a person's life that start the day he or she is born. These three cycles are the physical,