#include<iostream>
using namespace std;

int main()
{
	int a[100],b[100],m,n,i,j,gasit,ok=1;
	cin>>n;
	for(i=1;i<=n;i++) cin>>a[i];
	cin>>m;
	for(i=1;i<=m;i++) cin>>b[i];
	for(i=1;i<=n;i++)
	{
		gasit=0;
		for(j=1;j<=m;j++) if(a[i]==b[j]) gasit=1;
		if(!gasit) ok=0;
	}
	if(ok) cout<<"da";
	else cout<<"nu";
	return 0;
}