#include <fstream>
#define N 100001
using namespace std;
int a[N],n;

ifstream fin("elmaj.in");
ofstream fout("elmaj.out");

int main()
{
    int i,j,cand,vot;
    fin>>n;
    for(i=1;i<=n;i++) fin>>a[i];
    cand=a[1]; vot=1;
    for(i=2;i<=n;++i)
    {
        if(a[i]==cand) vot++;
        else if(vot>0) vot--;
        else {cand=a[i]; vot=1;}
    }
    vot=0;
    for(i=1;i<=n;i++)
        if(a[i]==cand) vot++;
    if(vot>n/2) fout<<cand<<" "<<vot<<"\n";
    else fout<<"NU \n";
    return 0;
}