Codeforces Global Round 3 |
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Finished |
You are given an array which is initially empty. You need to perform $$$n$$$ operations of the given format:
The elements of the array are numerated from $$$1$$$ in the order they are added to the array.
To make this problem more tricky we don't say your real parameters of the queries. Instead your are given $$$a'$$$, $$$l'$$$, $$$r'$$$, $$$k'$$$. To get $$$a$$$, $$$l$$$, $$$r$$$, $$$k$$$ on the $$$i$$$-th operation you need to perform the following:
The $$$\operatorname{mex}(S)$$$, where $$$S$$$ is a multiset of non-negative integers, is the smallest non-negative integer which does not appear in the set. For example, $$$\operatorname{mex}(\{2, 2, 3\}) = 0$$$ and $$$\operatorname{mex} (\{0, 1, 4, 1, 6\}) = 2$$$.
The first line contains a single integer $$$n$$$ ($$$1 \leq n \leq 2 \cdot 10^5$$$) — the length of the array.
The next $$$n$$$ lines contain the description of queries.
Each of them $$$n$$$ lines contains four non-negative integers $$$a'$$$, $$$l'$$$, $$$r'$$$, $$$k'$$$ ($$$0, \leq a', l', r', k' \leq 10^9$$$), describing one operation.
For each query print a single integer — the answer to this query.
5 0 0 0 1 0 1 0 5 5 2 1 0 5 2 1 0 2 4 3 3
1 1 2 6 3
5 2 0 0 2 2 0 1 1 0 0 2 0 3 2 2 0 0 2 3 0
0 0 3 0 0
For the first example the decoded values of $$$a$$$, $$$l$$$, $$$r$$$, $$$k$$$ are the following:
$$$a_1=0,l_1=1,r_1=1,k_1=1$$$
$$$a_2=1,l_2=1,r_2=2,k_2=0$$$
$$$a_3=0,l_3=1,r_3=3,k_3=1$$$
$$$a_4=1,l_4=1,r_4=4,k_4=2$$$
$$$a_5=2,l_5=1,r_5=5,k_5=3$$$
For the second example the decoded values of $$$a$$$, $$$l$$$, $$$r$$$, $$$k$$$ are the following:
$$$a_1=2,l_1=1,r_1=1,k_1=2$$$
$$$a_2=2,l_2=1,r_2=2,k_2=1$$$
$$$a_3=0,l_3=1,r_3=3,k_3=0$$$
$$$a_4=0,l_4=2,r_4=2,k_4=3$$$
$$$a_5=0,l_5=3,r_5=4,k_5=0$$$
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