#include <iostream>
using namespace std;
int main() {
    long long arr[200001], sum = 0;
    int n, t, count = 1;
    cin >> n;
    cin >> t >> arr[0];
    cout << arr[0] << endl;
    for (int m = 1; m < n; ++m) {
        cin >> t;
        if (t == 2) {
            cin >> arr[count++];
            t = count - 1;
            for (int k = 0; k < t; ++k) {
                sum += arr[k] ^ arr[t];
            }
            cout << sum << endl;
        } else {
            sum = 0;
            for (int k = 0; k < count; ++k) ++arr[k];
            for (int i = 0; i < count - 1; ++i) {
                for (int j = i + 1; j < count; ++j) {
                    if (arr[i] != arr[j])
                        sum += arr[i] ^ arr[j];
                }
            }
            cout << sum << endl;
        }
    }
}