Beauty of AP
https://forthright48.com/euler-totient-or-phi-function from this link see the section "Theorem Related to Arithmetic Progression" .
Statistics
76%
Solution Ratio
EgorKulikovEarliest,
Kuddus.6068Fastest, 0.1s
EgorKulikovLightest, 131 kB
kzvd4729Shortest, 921B
