51nod 1274 最长递增路径（DP）

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51nod 1274 最长递增路径（DP）

一开始自己想了一种跑的巨慢..写了题解的做法又跑的巨快..一脸懵逼显然要求边权递增就不可能经过重复的边了,那么设f[i]为第i条边出发能走多远就好了,这是我一开始的写法,可能dfs冗余状态较多,跑的极慢 #include<iostream> #include<cstdlib> #include<cstring> #include<cstdio> #include<algorithm> #include<queue> #include…

51nod1274 最长递增路径

将边排序后dp一下就可以了. #include<cstdio> #include<cstring> #include<cctype> #include<algorithm> using namespace std; #define rep(i,s,t) for(int i=s;i<=t;i++) #define dwn(i,s,t) for(int i=s;i>=t;i--) #define clr(x,c) memset(x,c,sizeof(…

[LeetCode] Longest Increasing Path in a Matrix 矩阵中的最长递增路径

Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up or down. You may NOT move diagonally or move outside of the boundary (i.e. wrap-around is not allowed). E…

51nod 1134 最长递增子序列

题目链接:51nod 1134 最长递增子序列 #include<cstdio> #include<cstring> #include<algorithm> using namespace std; ; int a[N]; int b[N]; int Search(int num, int low, int high){ int mid; while(low <= high){ mid = (low + high)/; ; ; } return low; } in…

[Swift]LeetCode329. 矩阵中的最长递增路径 | Longest Increasing Path in a Matrix

Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up or down. You may NOT move diagonally or move outside of the boundary (i.e. wrap-around is not allowed). E…

【题解】最长递增路径 [51nod1274]

[题解]最长递增路径 [51nod1274] 传送门:最长递增路径 \([51nod1274]\) [题目描述] 一个可能有自环有重边的无向图,每条边都有边权.输入两个整数 \(n,m\) 表示一共 \(n\) 个点,\(m\) 条边并且给出 \(m\) 条边的信息:连接点 \(x,y\),边权为 \(w\).你可以从任何点出发,任何点结束,可以经过同一个点任意次,但是同一条边不能经过多次,并且你走过的路必须满足所有边的权值严格单调递增,求最长能经过多少条边. 以此图为例,最长的路径是: \(3…