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datastructures
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2024-07-30
gcd
(
ll a
,
ll b
) {
return
b
==
0
?
a
:
gcd
(
b
,
a
%
b
);}
ll
lcm
(
ll a
,
ll b
) {
return
a
* (
b
/
gcd
(
a
,
b
));}