[PAT] Maximal Clique

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タイトルは以下の通り
A clique is a subset of vertices of an undirected graph such that every two distinct vertices in the clique are adjacent. A maximal clique is a clique that cannot be extended by including one more adjacent vertex. (Quoted from https://en.wikipedia.org/wiki/Clique_(graph_theory))
Now it is your job to judge if a given subset of vertices can form a maximal clique.
Input Specification:
Each input file contains one test case. For each case, the first line gives two positive integers Nv (≤ 200), the number of vertices in the graph, and Ne, the number of undirected edges. Then Ne lines follow, each gives a pair of vertices of an edge. The vertices are numbered from 1 to Nv.
After the graph, there is another positive integer M (≤ 100). Then M lines of query follow, each first gives a positive number K (≤ Nv), then followed by a sequence of K distinct vertices. All the numbers in a line are separated by a space.
Output Specification:
For each of the M queries, print in a line  Yes  if the given subset of vertices can form a maximal clique; or if it is a clique but not a maximal clique, print  Not Maximal ; or if it is not a clique at all, print  Not a Clique .
Sample Input:
8 10
5 6
7 8
6 4
3 6
4 5
2 3
8 2
2 7
5 3
3 4
6
4 5 4 3 6
3 2 8 7
2 2 3
1 1
3 4 3 6
3 3 2 1

Sample Output:
Yes
Yes
Yes
Yes
Not Maximal
Not a Clique

Cliqueは、すべての頂点が2つに接続された点セットであり、Maximal Cliqueは、このCliqueが与えられた図にこのCliqueを追加して新しいCliqueを形成することができないことを意味する.
難しくなく、マトリクスでエッジセットを保存し、このセットがCliqueであるか、このCliqueがMaximal Cliqueであるかを識別する2つのフラグ量を設定します.各サンプルをキャッシュするには、まず2つの頂点が接続されているかどうかを確認し、もしそうであれば、図の残りの頂点に頂点vが存在するかどうかを確認し、現在のCliqueのすべての頂点が接続されているかどうかを確認します.頂点は1-n配列で、少し面倒を省きました.
コードは次のとおりです.
#include 
#include 
using namespace std;
int e[201][201];
int main() {
	int nv, ne, m, a, b, k;
	scanf("%d %d", &nv, &ne);
	for (int i = 0; i < ne; i++) {
		scanf("%d %d", &a, &b);
		e[a][b] = e[b][a] = 1;
	}
	scanf("%d", &m);
	for (int i = 0; i < m; i++) {
		scanf("%d", &k);
		vector v(k);
		int check[201] = { 0 }, isClique = 1, isMaximal = 1;
		for (int j = 0; j < k; j++) {
			scanf("%d", &v[j]);
			check[v[j]] = 1;
		}//        check 
		for (int j = 0; j < k; j++) {
			if (isClique == 0) break;
			for (int l = j + 1; l < k; l++) {
				if (e[v[j]][v[l]] == 0) {
					isClique = 0;
					printf("Not a Clique
"); break; } } }// Clique, continue if (isClique == 0) continue; for (int j = 1; j <= nv; j++) { if (check[j] == 0) { for (int l = 0; l < k; l++) { if (e[v[l]][j] == 0) break; if (l == k - 1) isMaximal = 0;// break, }// ==1 0, 。 } if (isMaximal == 0) { printf("Not Maximal
"); break; } } if (isMaximal == 1) { printf("Yes
"); } } return 0; }