题目大意:如果一个数t=x^a+y^b(a,b都是大于等于0的整数)那就是一个unlucky数字.给你x,y,l,r(2 ≤ x, y ≤ 10^18, 1 ≤ l ≤ r ≤ 10^18),求出l到r内没有unlucky数字的最小区间. 解题思路:可以知道a,b最多也不会超过60(2^60>1e18),所以可以直接枚举x^a+y^b的值存到vector里,然后排序,遍历一下vector,找出v[i+1]-v[i]-1(因为两端都是unlucky数字所以要两个端点都不算在长度内)最大的区间即可.…
The Golden Age CodeForces - 813B 题目大意:如果一个数t=x^a+y^b(a,b都是大于等于0的整数)那就是一个unlucky数字.给你x,y,l,r(2 ≤ x, y ≤ 10^18, 1 ≤ l ≤ r ≤ 10^18),求出l到r内没有unlucky数字的最小区间. 解题思路:可以知道x,y最多也不会超过60次方(2^60>1e18),所以可以直接枚举x^a+y^b的值存到vector里,然后排序,找出间v[i+1]-v[i]-1(因为两端都是unlucky…
Unlucky year in Berland is such a year that its number n can be represented as n = xa + yb, where a and b are non-negative integer numbers. For example, if x = 2 and y = 3 then the years 4 and 17 are unlucky (4 = 20 + 31, 17 = 23 + 32 = 24 + 30) and…
Why The Golden Age Of Machine Learning is Just Beginning Even though the buzz around neural networks, artificial intelligence, and machine learning has been relatively recent, as many know, there is nothing new about any of these methods. If so many…
1257: [CQOI2007]余数之和sum Time Limit: 5 Sec Memory Limit: 162 MBSubmit: 1779 Solved: 823[Submit][Status] Description 给出正整数n和k,计算j(n, k)=k mod 1 + k mod 2 + k mod 3 + … + k mod n的值,其中k mod i表示k除以i的余数.例如j(5, 3)=3 mod 1 + 3 mod 2 + 3 mod 3 + 3 mod 4 + 3…
