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51 Nod 1640 天气晴朗的魔法
原题链接：题目-天气晴朗的魔法 (51nod.com) 大意：4个点，6条边，找到一条路，每条链的权值的最大值尽可能的小同时我们有要使魔力值之和尽可能的大。 思路：权值的最大值尽可能的小<=>求出其的最小的生成树，找到其权值最大的那条边达到了最大值尽可能的小，魔力值最大那么我们就可以找以这条权UVa 1640 The Counting Problem (数位dp)
题目链接：https://acm.hdu.edu.cn/showproblem.php?pid=1663 记录一下某数字出现的次数，每个数字都单独算一遍即可 #include<cstdio> #include<cstring> #include<vector> using namespace std; typedef long long ll; const int maxn = 30; int l, r; ll dp[maxn][maxn], ans[max1640. 能否连接形成数组
题目：给你一个整数数组 arr ，数组中的每个整数 互不相同 。另有一个由整数数组构成的数组 pieces，其中的整数也 互不相同 。请你以 任意顺序 连接 pieces 中的数组以形成 arr 。但是，不允许 对每个数组 pieces[i] 中的整数重新排序。如果可以连接 pieces 中的数组形成 arr ，返回 true ；[LeetCode] 1640. Check Array Formation Through Concatenation
You are given an array of distinct integers arr and an array of integer arrays pieces, where the integers in pieces are distinct. Your goal is to form arr by concatenating the arrays in pieces in any order. However, you are not allowed to reorde【leetcode_easy_sort】1640. Check Array Formation Through Concatenation
problem 1640. Check Array Formation Through Concatenation solution#1: code solution#2: code solution#3: code 参考 1. leetcode_essy_sort_1640. Check Array Formation Through Concatenation; 完【leetcode】1640. 能否连接形成数组
bool canFormArray(int* arr, int arrSize, int** pieces, int piecesSize, int* piecesColSize){ int hash[101]={0}, i, j; for(i=0; i<arrSize; i++) hash[arr[i]]=i+1; for(i=0; i<piecesSize; i++){ if(hash[pieces[i][0]]==0LeetCode 1640 Check Array Formation Through Concatenation (Easy)
You are given an array of distinct integers arr and an array of integer arrays pieces, where the integers in pieces are distinct. Your goal is to form arr by concatenating the arrays in pieces in any order. However, you are not allowed to reor