paritar

#include <fstream>
using namespace std;

int main()
{
    int n,x,i1=-1,p1=-1,i2=1000001,p2=1000001;
    ifstream f("paritar.in");
    f>>n;
    for(int i=1;i<=n;++i)
    {
        f>>x;
        if(x>i1)
            i1=x;
        if(x>p1)
            p1=x;
    }
    for(int i=n+1;i<=n*2;++i)
    {
        f>>x;
        if(x<i2)
            i2=x;
        if(x<p2)
            p2=x;
    }
    f.close();
    ofstream g("paritar.out");
    if(p1<i2&&i1<p2)
        g<<"DA";
    else
        g<<"NU";
    g.close();
    return 0;
}