flag = False
a = 1
while flag == False:
    if (a%1 == 0 and 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):
        print(a)
        flag = True
    a+=1