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Yaxshi juftliklar (a[i] = a[j]) | HackNow
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Yaxshi juftliklar (a[i] = a[j])
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UZ only
O'rta
20 points
1500 ms
256 MB
Prefix Sum
Author:
neo_yamaguchi
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Output format
Constraints
Examples
2
1
Example #1
Input
6 1 2 3 1 1 3
Output
4
2
Example #2
Input
5 1 2 3 4 5
Output
0
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Python 3
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PYTHON
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