Celex Update

medium
Question Solve Solutions 
<a href="https://codeforces.com/problemset/problem/1358/C" target="_blank"><i class="fa fa-external-link" aria-hidden="true"> Link -> Celex Update</i></a>

Input Format

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Output Format

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Constraints

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Notice

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Example

Input
4
1 1 2 2
1 2 2 4
179 1 179 100000
5 7 5 7
Output
2
3
1
1
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