cf/mirror

Pleasant Pairs

CF
1541B1200· pupil2s256 MB⌨ stdin/stdout
#brute force#implementation#math#number theory

Examples

Sample 1of 1
Input
3
2
3 1
3
6 1 5
5
3 1 5 9 2
Output
1
1
3
1541B.cpp
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Ln 11·137 BGNU C++20 (64)