PalXXL

#include <iostream>
using namespace std;

int main()
{
    int n,c;
    char nr[1000];
    cin>>n;
    for(int i=0;i<n;++i)
        cin>>c,cout<<c,nr[i]=c;
    bool ok=true;
    for(int i=0;i<=n/2;++i)
        if(nr[i]!=nr[n-i-1])
        {
            ok=false;
            break;
        }
    cout<<'\n';
    if(ok)
        cout<<"DA";
    else
        cout<<"NU";
    return 0;
}