Codeforces 486D Valid Sets 樹形dp+計數
題目鏈接:點擊打開鏈接 題意:給定常數d 和 n,表示n個點的樹,每個點有點權 問:有多少個點集使得點集中的點兩兩可達且最大點權-最小點權<=d 思路: 對於每
ural 1039 Anniversary Party
1039. Anniversary Party Time limit: 0.5 second Memory limit: 8 MB Background Th
[LeetCode]142.Linked List Cycle II
題目: Given a linked list, return the node where the cycle begins. If there is no
Leetcode_Compare Version Numbers
#include #include #include using namespace std; class Solution { public: