#include<cstdio>
const int M=20000000;
int v[1000000],n,k,c,i,o;
char r[M];
inline int A()
{
  	int s=0;
  	for(;r[o]<'0'||r[o]>'9';o++);
  	for(;r[o]>='0'&&r[o]<='9';o++)
  		s=s*10+r[o]-'0';
  	return s;
}
int main()
{
    freopen("elmaj.in","r",stdin),freopen("elmaj.out","w",stdout),fread(r,1,M,stdin),n=A();
    for(i=0;i<n;i++)
        v[i]=A(),!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");
}