#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n + 2, 1);
    int b = 0;
    int c = 1;
    for (int i = 0; i < n; i++) {
        int op, x;
        cin >> op >> x;
        x--;
        if (op == 1) {
            if (a[x]) {
                a[x] = 0;
            }
            if (b == x) {
                b = c;
                c++;
                while (!a[c]) {
                    c++;
                }
            } else if (c == x) {
                c++;
                while (!a[c]) {
                    c++;
                }
            }
        } else {
            if (b == x) {
                cout << c + 1 << '\n';
            } else {
                cout << b + 1 << '\n';
            }
        }
    }
    return 0;
}