#include <cstdio>

using namespace std;

int main() {
    freopen("elmaj.in", "r", stdin);
    freopen("elmaj.out", "w", stdout);
    int n;
    scanf("%d", &n);
    int elem = 0, fv = 0;
    scanf("%d", &elem);
    fv = 1;
    for(int i = 2; i <= n; ++i) {
        int x;
        scanf("%d", &x);
        if(x == elem) {
            fv++;
        } else {
            fv--;
            if(fv == 0) {
                elem = x;
                fv = 1;
            }
        }
    }
    fclose(stdin);
    freopen("elmaj.in", "r", stdin);
    scanf("%d", &n);
    int ans = 0;
    for(int i = 1; i <= n; ++i) {
        int x;
        scanf("%d", &x);
        if(x == elem)
            ans++;
    }
    if(ans >= (n + 1) / 2)
        printf("%d %d\n", elem, ans);
    else
        printf("-1\n");
    return 0;
}