One day, Kaitou Kiddo had stolen a priceless diamond ring. But detective Conan blocked Kiddo's path to escape from the museum. But Kiddo didn't want to give it back. So, Kiddo asked Conan a question. If Conan could give a right answer, Kiddo would re…
题目链接:hdu 5587 前两周 bc 上的题了,因为赶大作业所以没有去打,看了下官方给出的思路,感觉好强大~~竟然能转化成求二进制数 1 的个数: 然后数位 dp 就行了, #include<cstdio> #include<cstring> #include<algorithm> using namespace std; typedef unsigned long long ull; #define For(i,s,t) for(int i = s; i <…
题目难度:Medium 题目: Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target. Note: The solution set must not contain duplicate quadrup…
题目: Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same element twice. 翻译: 给定一组整数,两个数字的返回索引,它们的和会等于一个特定…