Entity:
MathFunctions 54 38
null  * 



Operation:
combinatorial
MathFunctions
long
n int m int 
 query static
n >= m & m >= 0
( n - m < m => result = Integer.Prd(m + 1,n,i,i) / Integer.Prd(1,n - m,j,j) ) & ( n - m >= m => result = Integer.Prd(n - m + 1,n,i,i) / Integer.Prd(1,m,j,j) )



Operation:
factorial
MathFunctions
long
x int 
 query static
true
( x < 2 => result = 1 ) & ( x >= 2 => result = Integer.Prd(2,x,i,i) )



Operation:
gcd
MathFunctions
int
x int y int 
 query static
x >= 1 & y >= 1
true



Operation:
lcm
MathFunctions
int
x int y int 
 query static
x >= 1 & y >= 1
result = ( x * y ) / MathFunctions.gcd(x,y)



Activity:
MathFunctions gcd
l : int ; k : int ; l := x  ; k := y  ;  while l /= 0 & k /= 0 do if l < k then k := k mod l  else l := l mod k    ; if l = 0 then return k else return l ; return result