cf/mirror

Count Triangles

CF
1355C1800· expert1s256 MB⌨ stdin/stdout
#binary search#implementation#math#two pointers

Examples

Sample 1of 3
Input
1 2 3 4
Output
4
Sample 2of 3
Input
1 2 2 5
Output
3
Sample 3of 3
Input
500000 500000 500000 500000
Output
1
1355C.cpp
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Ln 11·137 BGNU C++20 (64)