Category : graph

In a graph, a permutation of the vertices [v1, v2, …..vn] is called a lucky permutation if for every vertex vi (where 1 <= i <= N-1), there exists an edge between vi and vi+1. You are given a graph with N vertices and M bidirectional edges. Write a program to calculate the number of ..

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Language: C++ IDE: Visual Studio 2019 I wrote a program that collects data on random graphs (different probabilities for edges) to prove a Erdős–Rényi model threshold. each graph has 1000 vertexes and i need to run 15,000 cases (5,000 of which are diameter – and that takes a while) so naturally i would want to ..

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I trying to solve this problem : https://codeforces.com/contest/216/problem/B so I find I could use bipartite and coloring each node whether 0 or 1 and I implement this code #include <bits/stdc++.h> using namespace std; int n; int m; int cnt = 0; vector<int> graph[110]; bool visit[110]; bool cross[110]; bool color[110]; void dfs(int i, int c) { ..

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beginner here, I was implementing an adjacency list to represent the graph in C++, I was stuck conceptually in the below code snippet. void addEdge(vector<int> adj[], int s, int d) { adj[s].push_back(d); adj[d].push_back(s); } vector<int> adj[] will contain list of all nodes My question is we have 1D vector adj[], how are we able to ..

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In the boost graph library, there are two popular functions to read in graphs from a file: boost::read_graphviz(), and boost::read_graphml(), for the GraphViz and the GraphML format, respectively. Now both read generically to any type of boost::adjacency_list<…>, as they are derived from the Mutable Graph concept: #include <string> #include <fstream> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/adjacency_matrix.hpp> #include ..

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