#include<stdio.h>
int v[1000000],n,k,c,i;
int main()
{
    freopen("elmaj.in","r",stdin),freopen("elmaj.out","w",stdout),scanf("%d",&n);
    for(i=0;i<n;++i)
        scanf("%d",v+i),!k?c=v[i],k=1:(v[i]==c?++k:--k);
    for(k=i=0;i<n;++i)
        if(c==v[i])
            ++k;
    k>n/2?printf("%d %d",c,k):printf("-1");
    return 0;
}