#include<bits/stdc++.h>
using namespace std;

const int N=5e6+100;

int a[N];

int main() {

    int i,n,x,y,op,k;

    x=1,y=2;

    scanf("%d",&n);
    for (i=1;i<=n+2;i++) a[i]=0;

    while (n--) {
        scanf("%d%d",&op,&k);
        if (op==1) {
            a[k]=1;
            while (a[x]) x++;
            if (x==y) y++;
            while (a[y]) y++;
        } else {
            printf("%d\n",k==x?y:x);
        }
    }

    

    return 0;
}