#include <iostream>
#include <unordered_map>

using namespace std;

const int MAXN = 15;
const int MX_VAL = 1e2;

int main() {
    freopen("input.txt", "w", stdout);
    freopen("output.txt", "r", stdin);
    int n = rand() % MAXN + 1;
    int m = rand() % MAXN + 1, ans = 0;
    int a[n];
    int b[m];
    unordered_map<int, bool> used;
    cout << n << "\n";
    for (int i = 0; i < n; ++i) {
        a[i] = (rand() % MX_VAL) * (rand() % 2 == 0 ? 1 : -1);
        used[a[i]] = 1;
        cout << a[i] << " ";
    }
    cout << "\n" << m << "\n";
    for (int i = 0; i < m; ++i) {
        b[i] = (rand() % MX_VAL) * (rand() % 2 == 0 ? 1 : -1);
        ans = ans + (used[b[i]]);
        cout << b[i] << " ";
    }
    int ans_solve;
    cin >> ans_solve;
    if (ans != ans_solve) {
        cout << "WA";
        return 0;
    }
    return 0;
}