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123456789101112131415161718192021222324252627282930313233#include using namespace std; void find(int** grp, int* arr, int size, int val) { arr[val] = 1; for (int pos = 0; pos > N >> M; int* arr = new int[N + 1]{ 0, }; int** grp = new int*[N + 1]; for (int i = 1; i u >> v; grp[u][v] = 1; grp[v][u] = 1; } for (int i = 1; i