摘要：Balanced Numbers Balanced numbers have been used by mathematicians for centuries. A positive integer is considered a balanced number if: 1) Every even 阅读全文

摘要：B-number A wqb-number, or B-number for short, is a non-negative integer whose decimal form contains the sub- string "13" and can be divided by 13. For 阅读全文

摘要：https://cn.vjudge.net/problem/Gym-101889E 1??????????????????????????????? 2 10000000000000000000000000000000 ???????????????????????????????1 2 * ?29 阅读全文

摘要：Palindrome Function As we all know,a palindrome number is the number which reads the same backward as forward,such as 666 or 747.Some numbers are not 阅读全文

摘要：J-Beautiful Numbers 链接：https://www.nowcoder.com/acm/contest/163/J 来源：牛客网 时间限制：C/C++ 8秒，其他语言16秒 空间限制：C/C++ 262144K，其他语言524288K 64bit IO Format: %lld 时间 阅读全文

摘要：Mountain Number One integer number x is called "Mountain Number" if: (1) x>0 and x is an integer; (2) Assume x=a[0]a[1]...a[len-2]a[len-1](0≤a[i]≤9, a 阅读全文