Replace the Numbers
Description
You have an array of integers (initially empty).
You have to perform $q$ queries. Each query is of one of two types:
- "$1$ $x$" — add the element $x$ to the end of the array;
- "$2$ $x$ $y$" — replace all occurrences of $x$ in the array with $y$.
Find the resulting array after performing all the queries.
The first line contains a single integer $q$ ($1 \le q \le 5 \cdot 10^5$) — the number of queries.
Next $q$ lines contain queries (one per line). Each query is of one of two types:
- "$1$ $x$" ($1 \le x \le 5 \cdot 10^5$);
- "$2$ $x$ $y$" ($1 \le x, y \le 5 \cdot 10^5$).
It's guaranteed that there is at least one query of the first type.
In a single line, print $k$ integers — the resulting array after performing all the queries, where $k$ is the number of queries of the first type.
Input
The first line contains a single integer $q$ ($1 \le q \le 5 \cdot 10^5$) — the number of queries.
Next $q$ lines contain queries (one per line). Each query is of one of two types:
- "$1$ $x$" ($1 \le x \le 5 \cdot 10^5$);
- "$2$ $x$ $y$" ($1 \le x, y \le 5 \cdot 10^5$).
It's guaranteed that there is at least one query of the first type.
Output
In a single line, print $k$ integers — the resulting array after performing all the queries, where $k$ is the number of queries of the first type.
Samples
7
1 3
1 1
2 1 2
1 2
1 1
1 2
2 1 3
3 2 2 3 2
4
1 1
1 2
1 1
2 2 2
1 2 1
8
2 1 4
1 1
1 4
1 2
2 2 4
2 4 3
1 2
2 2 7
1 3 3 7
Note
In the first example, the array changes as follows:
$[]$ $\rightarrow$ $[3]$ $\rightarrow$ $[3, 1]$ $\rightarrow$ $[3, 2]$ $\rightarrow$ $[3, 2, 2]$ $\rightarrow$ $[3, 2, 2, 1]$ $\rightarrow$ $[3, 2, 2, 1, 2]$ $\rightarrow$ $[3, 2, 2, 3, 2]$.
In the second example, the array changes as follows:
$[]$ $\rightarrow$ $[1]$ $\rightarrow$ $[1, 2]$ $\rightarrow$ $[1, 2, 1]$ $\rightarrow$ $[1, 2, 1]$.
In the third example, the array changes as follows:
$[]$ $\rightarrow$ $[]$ $\rightarrow$ $[1]$ $\rightarrow$ $[1, 4]$ $\rightarrow$ $[1, 4, 2]$ $\rightarrow$ $[1, 4, 4]$ $\rightarrow$ $[1, 3, 3]$ $\rightarrow$ $[1, 3, 3, 2]$ $\rightarrow$ $[1, 3, 3, 7]$.