def res1():
    res = 0
    a = 20
    while(res == 0):
        if(a % 2 == 0 and a % 3 == 0 and a % 4 == 0 and a % 5 == 0 and a % 6 == 0 and a % 7 == 0 and a % 8 == 0 and a % 9 == 0 and a % 10 == 0 and a % 11 == 0 and a % 12 == 0 and a % 13 == 0 and a % 14 == 0 and a % 15 == 0 and a % 16 == 0 and a % 17 == 0 and a % 18 == 0 and a % 19 == 0 and  a % 20 == 0):
            res = a
            a+= 1
    return res
k = res1()
print(k)