mowayao的专栏

windy定义了一种windy数。不含前导零且相邻两个数字之差至少为2的正整数被称为windy数。windy想知道，在A和B之间，包括A和B，总共有多少个windy数？Input包含两个整数，A B。满足 1 Output包含一个整数：闭区间[A,B]上windy数的个数。Sample Input1 10

Problem DescriptionHave you ever played quoit in a playground? Quoit is a game in which flat rings are pitched at some toys, with all the toys encircled awarded.In the field of Cyberground, the

A palindromic number or numeral palindrome is a 'symmetrical' number like 16461 that remains the same when its digits are reversed. In this problem you will be given two integers i j, you have to find

An integer is divisible by 3 if the sum of its digits is also divisible by 3. For example, 3702 is divisible by 3 and 12 (3+7+0+2) is also divisible by 3. This property also holds for the integer 9.

A bit is a binary digit, taking a logical value of either 1 or 0 (also referred to as "true" or "false" respectively). And every decimal number has a binary representation which is actually a series o

Jimmy writes down the decimal representations of all natural numbers between and including m and n, (m ≤ n). How many zeroes will he write down?InputInput starts with an integer T (≤ 11000), denot

B-numberTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2168    Accepted Submission(s): 1165Problem DescriptionA wqb-number, or

Problem DescriptionFor a decimal number x with n digits (AnAn-1An-2 ... A2A1), we define its weight as F(x) = An * 2n-1 + An-1 * 2n-2 + ... + A2 * 2 + A1 * 1. Now you are given two numbers A and

Description 科协里最近很流行数字游戏。某人命名了一种不降数，这种数字必须满足从左到右各位数字成大于等于的关系，如123，446。现在大家决定玩一个游戏，指定一个整数闭区间[a,b]，问这个区间内有多少个不降数。Input题目有多组测试数据。每组只含2个数字a, b (1 Output每行给出一个测试数据的答案，即[a, b]之间有多少阶梯数。

UVa 12683 Odd and Even Zeroes（数论+数位DP）