user = str(input())
a,b,c = user.split(',')
a = int(a)
b = int(b)
c = int(c)
loop = True
lcm = 1
if a>b and a>c:
    high = a
elif b>a and b>c:
    high = b
else:
    high = c
while loop:
    for i in range(2,high):
        if a%i==0 and b%i==0 and c%i==0:
            a /= i
            b /= i
            c /= i
            lcm *= i
            break
        elif a%i==0 and b%i==0:
            a /=i
            b /=i
            lcm *=i
            break
        elif b%i==0 and c%i==0:
            b/=i
            c/=i
            lcm *=i
            break
        elif a%i == 0 and c%i==0:
            c/=i
            a/=i
            lcm *=i
            break
    else:
        lcm *= a*b*c
        loop = False
print(lcm)