Title Given an undirected simple graph with n (n?≥?3) vertices and m edges where the vertices are numbered from 1 to n, we call it a “sub-cycle” graph if it’s possible to add a non-negative number of edges to it and turn the graph into exactly one simple cycle of n< /em> vertices. Given two […]
Tag: combinatorics
Educational Codeforces Round 148 (Rated for Div. 2) E. Combinatorics Problem (recursion/number of combinations)
Original question link: E. Combinatorics Problem The main idea of the title: Given a length of n n array of n a a a (obtained according to the formula of the original question) and a positive integer k k k, you need to calculate a length of n n new array of n b b […]
Codeforces 1832 E Combinatorics Problem Analysis [difficulty 2200]
Article directory Subject address topic abstract topic type problem solving ideas the code Subject URL https://codeforces.com/problemset/problem/1832/E Abstract topic give n, a 1 a_1 a1?, x, y, m, k are six integers, and the following 4 steps are required according to a i = ( a i ? 1 ? x + the y ) % […]