#include <bits/stdc++.h>

using namespace std;

int main() {
    int r;
    cin >> r;
    int a[8] = {0}, b[8] = {0};
    for (int i = 0; i < 8; ++i) {
        cin >> a[i];
    }
    for (int i = 0; i < 8; ++i) {
        cin >> b[i];
    }
    //排序
    sort(a, a + 8);
    sort(b, b + 8);

    int count = 0;
    for (int i = 0; i < 8; ++i) {
        if (a[i] < b[0] && a[i] < r) count++;
        else break;
    }
    if (count > 0) {
        cout << count << ":" << 0 << endl;
    } else {
        for (int i = 0; i < 8; ++i) {
            if (b[i] < a[0] && b[i] < r) count++;
            else break;
        }
        if (count > 0) {
            cout << 0 << ":" << count << endl;
        } else {
            cout << "0:0" << endl;
        }
    }
    return 0;
}