ones=["","one","two","three","four","five","six","seven","eight","nine"]
SpecialTens=["ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen"]
tens=[0,"ten","twenty","thirty","forty","fifty","sixty","seventy","eighty","ninety"]
bigger = ["hundred","thousand","million","billion"]
CurrentNumber=int(input())
global CurrentString
CurrentString = ""
def ConvertToString(n):
    global CurrentString
    ListNum = list(str(n))
    if(len(str(n))==1):
        CurrentString += ones[n]
    elif(len(str(n))==2):
        if(ListNum[0] == "1"):
            CurrentString += SpecialTens[n%10]
        else:
            CurrentString += tens[int(n//10)]
            n = n%10
            ConvertToString(n)
    elif(len(str(n))==3):
        CurrentString += ones[int(n//100)]+"hundred"
        n=n%100
        ConvertToString(n)
    elif(len(str(n))==4):
        CurrentString += ones[int(n//1000)]+"thousand"
        n=n%1000
        ConvertToString(n)
    elif(len(str(n))==5):
        CurrentString += tens[int(n//10000)]
        n=n%10000
        ConvertToString(n)
    elif(len(str(n))==6):
        CurrentString += ones[int(int(''.join(ListNum[0:3]))//100)]+"hundred"
        n=n%100000
        ConvertToString(n)
    elif(len(str(n))==7):
        CurrentString += ones[int(n//1000000)]+"million"
        n=n%1000000
        ConvertToString(n)
    elif(len(str(n))==8):
        if(10<=n//1000000<=19):
            CurrentString += SpecialTens[int(n//1000000)%10]+"million"
            n=int(''.join(ListNum[2:]))
        else:
            CurrentString += tens[int(n//10000000)]
            n=n%10000000
        ConvertToString(n)
    elif(len(str(n))==9):
        CurrentString += ones[int(int(''.join(ListNum[0:3]))//100)]+"hundred"
        n=n%100000000
        ConvertToString(n)
    else:
        if(ListNum[0]=="1"):
            CurrentString+="onebillion"
            n=n%1000000000
            ConvertToString(n)
        else:
            CurrentString+="twobillion"
            n=n%1000000000
            ConvertToString(n)
while True:
    ConvertToString(CurrentNumber)
    if(len(CurrentString)==4):
        print(4)
        break
    else:
        print(CurrentString)
        #print(len(CurrentString))
        CurrentNumber = len(CurrentString)
        CurrentString = ""