for n in range(300):
    s = "1"+"2"*n
    while ('12' in s) or ('5522' in s) or ('2222' in s):
        if ('12' in s):
            s=s.replace ('12','55',1)
        if ('2222' in s):
            s=s.replace ('2222','1',1)
        if ('5522' in s):
            s = s.replace('5522', '21',1)
    sum = 0        
    for i in s:
        sum += int(i)
        if sum == 142:
            print(n)