// a test of immintrin-optimizition

#define __AVX__ 1
#define __AVX2__ 1

#pragma GCC target("avx2,bmi,fma,popcnt")
#include <bits/stdc++.h>
#include <immintrin.h>
using namespace std;

using vec = __m256i;
#define v32(x) _mm256_##x
const int maxn = 2e5;
alignas(32) int a[maxn];
int ptr = 0;

signed main() {
    ios::sync_with_stdio(0);
    int n;
    cin >> n;
    int ans = 0;
    vec tmp = v32(set1_epi32)(1);
    for (int i = 1; i <= n; ++i) {
        short mod;
        cin >> mod;
        if (mod == 1) {
            vec v1 = v32(set1_epi32)(0);
            int i = 0;
#pragma unroll 8
            for (; i < ptr - 8; i += 8) {
                vec v0 = v32(load_si256)((vec*)(a + i));
                v0 = v32(add_epi32)(v0, tmp);
                v1 = v32(xor_si256)(v0, v1);
                v32(store_si256)((vec*)(a + i), v0);
            }
            ans = 0;
            for (; i < ptr; ++i) {
                ++a[i];
                ans ^= a[i];
            }
            int* p = (int*)(&v1);
            for (int i = 0; i < 8; ++i) {
                ans ^= p[i];
            }
        } else {
            int x;
            cin >> x;
            a[ptr] = x;
            ++ptr;
            ans ^= x;
        }
        cout << ans << endl;
    }
    return 0;
}