Bombs

3000ms

262144K

Description:

You are given a permutation, $$$p_1, p_2, \ldots, p_n$$$.

Imagine that some positions of the permutation contain bombs, such that there exists at least one position without a bomb.

For some fixed configuration of bombs, consider the following process. Initially, there is an empty set, $$$A$$$.

For each $$$i$$$ from $$$1$$$ to $$$n$$$:

Add $$$p_i$$$ to $$$A$$$.
If the $$$i$$$-th position contains a bomb, remove the largest element in $$$A$$$.

After the process is completed, $$$A$$$ will be non-empty. The cost of the configuration of bombs equals the largest element in $$$A$$$.

You are given another permutation, $$$q_1, q_2, \ldots, q_n$$$.

For each $$$1 \leq i \leq n$$$, find the cost of a configuration of bombs such that there exists a bomb in positions $$$q_1, q_2, \ldots, q_{i-1}$$$.

For example, for $$$i=1$$$, you need to find the cost of a configuration without bombs, and for $$$i=n$$$, you need to find the cost of a configuration with bombs in positions $$$q_1, q_2, \ldots, q_{n-1}$$$.

Input:

The first line contains a single integer, $$$n$$$ ($$$2 \leq n \leq 300\,000$$$).

The second line contains $$$n$$$ distinct integers $$$p_1, p_2, \ldots, p_n$$$ ($$$1 \leq p_i \leq n)$$$.

The third line contains $$$n$$$ distinct integers $$$q_1, q_2, \ldots, q_n$$$ ($$$1 \leq q_i \leq n)$$$.

Output:

Print $$$n$$$ space-separated integers, such that the $$$i$$$-th of them equals the cost of a configuration of bombs in positions $$$q_1, q_2, \ldots, q_{i-1}$$$.

Sample Input:

3
3 2 1
1 2 3

Sample Output:

3 2 1

Sample Input:

6
2 3 6 1 5 4
5 2 1 4 6 3

Sample Output:

6 5 5 5 4 1

Note:

In the first test:

If there are no bombs, $$$A$$$ is equal to $$$\{1, 2, 3\}$$$ at the end of the process, so the cost of the configuration is $$$3$$$.
If there is one bomb in position $$$1$$$, $$$A$$$ is equal to $$$\{1, 2\}$$$ at the end of the process, so the cost of the configuration is $$$2$$$;
If there are two bombs in positions $$$1$$$ and $$$2$$$, $$$A$$$ is equal to $$$\{1\}$$$ at the end of the process, so the cost of the configuration is $$$1$$$.

In the second test:

Let's consider the process for $$$i = 4$$$. There are three bombs on positions $$$q_1 = 5$$$, $$$q_2 = 2$$$, and $$$q_3 = 1$$$.

At the beginning, $$$A = \{\}$$$.

Operation $$$1$$$: Add $$$p_1 = 2$$$ to $$$A$$$, so $$$A$$$ is equal to $$$\{2\}$$$. There exists a bomb in position $$$1$$$, so we should delete the largest element from $$$A$$$. $$$A$$$ is equal to $$$\{\}$$$.
Operation $$$2$$$: Add $$$p_2 = 3$$$ to $$$A$$$, so $$$A$$$ is equal to $$$\{3\}$$$. There exists a bomb in position $$$2$$$, so we should delete the largest element from $$$A$$$. $$$A$$$ is equal to $$$\{\}$$$.
Operation $$$3$$$: Add $$$p_3 = 6$$$ to $$$A$$$, so $$$A$$$ is equal to $$$\{6\}$$$. There is no bomb in position $$$3$$$, so we do nothing.
Operation $$$4$$$: Add $$$p_4 = 1$$$ to $$$A$$$, so $$$A$$$ is equal to $$$\{1, 6\}$$$. There is no bomb in position $$$4$$$, so we do nothing.
Operation $$$5$$$: Add $$$p_5 = 5$$$ to $$$A$$$, so $$$A$$$ is equal to $$$\{1, 5, 6\}$$$. There exists a bomb in position $$$5$$$, so we delete the largest element from $$$A$$$. Now, $$$A$$$ is equal to $$$\{1, 5\}$$$.
Operation $$$6$$$: Add $$$p_6 = 4$$$ to $$$A$$$, so $$$A$$$ is equal to $$$\{1, 4, 5\}$$$. There is no bomb in position $$$6$$$, so we do nothing.

In the end, we have $$$A = \{1, 4, 5\}$$$, so the cost of the configuration is equal to $$$5$$$.

Informação

Provedor Codeforces

Código CF1326E