A14855 | Replace the Numbers
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内存限制256MB
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题目描述
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.
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.
输入格式
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.
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.
输出格式
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.
输入输出样例
输入 #1
7 1 3 1 1 2 1 2 1 2 1 1 1 2 2 1 3
输出 #1
3 2 2 3 2
输入 #2
4 1 1 1 2 1 1 2 2 2
输出 #2
1 2 1
输入 #3
8 2 1 4 1 1 1 4 1 2 2 2 4 2 4 3 1 2 2 2 7
输出 #3
1 3 3 7
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:
$[]$ $\rightarrow$ $[]$ $\rightarrow$ $[1]$ $\rightarrow$ $[1, 4]$ $\rightarrow$ $[1, 4, 2]$ $\rightarrow$ $[1, 4, 4]$ $\rightarrow$ $[1, 3, 3]$ $\rightarrow$ $[1, 3, 3, 2]$ $\rightarrow$ $[1, 3, 3, 7]$ .
$[]$ $\rightarrow$ $[3]$ $\rightarrow$ $[3, 1]$ $\rightarrow$ $[3, 2]$ $\rightarrow$ $[3, 2, 2]$ $\rightarrow$ $[3, 2, 2, 1]$ $\rightarrow$ $[3, 2, 2, 1, 2]$ $\rightarrow$ $[3, 2, 2, 3, 2]$ .
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:
$[]$ $\rightarrow$ $[]$ $\rightarrow$ $[1]$ $\rightarrow$ $[1, 4]$ $\rightarrow$ $[1, 4, 2]$ $\rightarrow$ $[1, 4, 4]$ $\rightarrow$ $[1, 3, 3]$ $\rightarrow$ $[1, 3, 3, 2]$ $\rightarrow$ $[1, 3, 3, 7]$ .
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评测结果：Accepted