题目Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 24691 ...
题目A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic numb ...
题目A reversible prime in any number system is a prime whose “reverse” in that number system is also a prime. For example in the decimal system 73 is a ...
题目With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing ...
题目The highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the el ...
题目Given a non-negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the sum in English.Input Specifica ...
题目This time, you are supposed to find A+B where A and B are two polynomials.InputEach input file contains one test case. Each case occupies 2 lines, a ...
题目Calculate a + b and output the sum in standard format – that is, the digits must be separated into groups of three by commas (unless there are less ...
