#include <cstdio>

char inBuffer[0x1000000];

size_t v[0xF4241], p = 0x0;

__attribute__((always_inline)) size_t get_number()
{
    size_t number = 0x0;

    while(0x2F < inBuffer[p])
    {
        number = number * 0xA + inBuffer[p] - 0x30;

        ++p;
    }

    ++p;

    return number;
}

int main()
{
    freopen("elmaj.in", "r", stdin);
    freopen("elmaj.out", "w", stdout);

    fread(inBuffer, 0x1, 0x1000000, stdin);

    size_t N = get_number(), x, candidate, unpaired = 0, condition;

    for(size_t i = -~N; --i;)
    {
        x = get_number();

        if(unpaired == 0) candidate = x, unpaired = 0x1;

        unpaired += (condition = x == candidate) - !condition;

        v[i] = x;
    }

    unpaired = 0x0;

    for(size_t i = -~N; --i;)
    {
        unpaired += v[i] == candidate;
    }

    printf(unpaired > N >> 1 ? "%d %d" : "-1", candidate, unpaired);

    return 0x0;
}