UVA 280 SOLUTION

#include<stdio.h>
#define READ freopen("Text.txt","r",stdin)
#define ll long long

int node;
int graph[102][102];
int visited[102];

void clear(int node)
{
 for (int i = 0; i <= node; i++) visited[i] = 0;

}

void init_Graph()
{
 for (int i = 0; i < 101; i++)
  for (int j = 0; j < 102; j++) graph[i][j] = 0;
}
void dfs(int n)
{
 for (int i = 1; i <= node; i++)
 {
  if (graph[n][i] == 1 && visited[i] == 0)
  {
   visited[i] = 1;
   dfs(i);
  }
 }

 return;
}
int main()
{
 // READ;
 while (scanf("%d", &node) == 1 && node != 0)
 {
  int start, n, q, s;
  init_Graph();
  while (scanf("%d", &start) == 1 && start != 0)
  {
   while (scanf("%d", &n) && n != 0)
   {
    graph[start][n] = 1;
   }
  }
  scanf("%d", &q);
  while (q--)
  {
   scanf("%d", &s);
   int ans = 0;
   clear(node);
   dfs(s);
   for (int i = 1; i <= node; i++) if (visited[i] == 0) ans++;
   printf("%d", ans);
   for (int i = 1; i <= node; i++) if (visited[i] == 0)  printf(" %d", i);
   puts("");

  }

 }

 return 0;
}