cf/mirror

Multiply by 2, divide by 6

CF
1374B900· newbie1s256 MB⌨ stdin/stdout
#math

Examples

Sample 1of 1
Input
7
1
2
3
12
12345
15116544
387420489
Output
0
-1
2
-1
-1
12
36
1374B.cpp
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Ln 11·137 BGNU C++20 (64)