The BOSS Can Count Pairs

1830B2000· candidate master4s512 MB⌨ stdin/stdout

Sample 1of 1multi-test • hover to link

Input

3
3
2 3 2
3 3 1
8
4 2 8 2 1 2 7 5
3 5 8 8 1 1 6 5
8
4 4 8 8 8 8 8 8
8 8 8 8 8 8 8 8

Output

2
7
1

1830B.cpp

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Ln 11·137 BGNU C++20 (64)