#include<fstream.h>
fstream f("date.in",ios::in);
fstream g("date2.in",ios::in);

int a[100][100],b[100][100],n,m,k,l;
void citire()
 {int x,y,i;
  f>>n>>m;
  for(i=1;i<=m;i++)
   {f>>x>>y;
    a[x][y]=1;
    a[y][z]=1;
   }
  g>>k>>l;
  for(i=1;i<=l;i++)
   {g>>x>>y;
    b[x][y]=1;
    b[y][x]=1;
   }
 }

int subgraf()
 {for(int i=1;i<=k;i++)
   for(int j=1;j<=k;j++)
    if(a[i][j]!=b[i][j]) return 0;
  return 1;
 }

void main()
 {citire();
  if(subgraf()) cout<<"da";
    else cout<<"nu";
 }