#include<cstdio>
const int N=8388608;
char r[N];
int v[1000001],p,c,u;
inline int A()
{
    int n=0;
    for(;47<r[p];++p)
        n=n*10+r[p]-48;
    ++p;
    return n;
}
int main()
{
    freopen("elmaj.in","r",stdin),freopen("elmaj.out","w",stdout),fread(r,1,N,stdin),n=A();
    for(i=-~n;--i;)
    {
        v[i]=A();
        if(v[i]==c)
            ++u;
        else if(u)
            --u;
        else
            c=v[i],u=1;
    }
    for(u=0,i=-~n;--i;)
        u+=v[i]==c;
    printf(u>n>>1?"%d %d":"-1",c,u);
    return 0;
}