number = input("Enter your binary number: ")
    if len(number) < 8:
        for i in range(0,8-len(number)):
            newnumber = "0"+number
            number = newnumber
    endnumber = ["",""]
    result = ""
    for i in range(2):
        if i == 1:
            startnumber = number[0:3]
        else:
            startnumber = number[4:7]
        if startnumber == "0000":
            result = result + "0"
        elif startnumber == "0001":
            result = result + "1"
        elif startnumber == "0010":
            result = result + "2"
        elif startnumber == "0011":
            result = result + "3"
        elif startnumber == "0100":
            result = result + "4"
        elif startnumber == "0101":
            result = result + "5"
        elif startnumber == "0110":
            result = result + "6"
        elif startnumber == "0111":
            result = result + "7"
        elif startnumber == "1000":
            result = result + "8"
        elif startnumber == "1001":
            result = result + "9"
        elif startnumber == "1010":
            result = result + "A"
        elif startnumber == "1011":
            result = result + "B"
        elif startnumber == "1100":
            result = result + "C"
        elif startnumber == "1101":
            result = result + "D"
        elif startnumber == "1110":
            result = result + "E"
        elif startnumber == "1111":
            result = result + "F"
    print(result)