#include <iostream>
using namespace std;
 
int main() {
    int n, v[10000], m, k, x;
    cin >> n;
    for (int i = 1; i <= n; ++i) {
        cin >> v[i];
    }
    cin >> m;
    for (int j = 1; j <= m; ++j) {
        cin >> k;
        if (k == 1) {
            cin >> x;
            ++n;
            v[n] = x;
        }
        if (k == 2) {
            --n;
        }
    }
    cout << n << "\n ";
    for (int i = 1; i <= n; ++i) {
        cout << v[i] << " ";
    }
    return 0;
}

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

MwoxIDIgMyAKNgoxIDkKMSA5CjEgOQoxIDkKMSA5CjEgOQotOQoxIDIgMyA5IDkgOSA5IDkgOQ==

3
1 2 3 
6
1 9
1 9
1 9
1 9
1 9
1 9
-9
1 2 3 9 9 9 9 9 9