#include 
     
      #include 
      
       int couple[100000];struct rec{    int id;    int notinlist;}stay[10000+1];int comp(const void*a,const void*b){    return ((struct rec*)a)->id-((struct rec*)b)->id;}int main(){    int n,m,i,j;    for(i=0;i<100000;++i)        couple[i]=-1;    scanf("%d",&n);    while(n--)    {        int a,b;        scanf("%d %d",&a,&b);        couple[a]=b;couple[b]=a;    }    scanf("%d",&m);    for(i=0;i