def enigma(text, ref, rot1, shift1, rot2, shift2, rot3, shift3):
    text = text.upper()
    rotor0 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    if rot1 == 1:
        rotor1 = "EKMFLGDQVZNTOWYHXUSPAIBRCJ"
    if rot2 == 2:
        rotor2 = "AJDKSIRUXBLHWTMCQGZNPYFVOE"
    if rot3 == 3:
        rotor3 = "BDFHJLCPRTXVZNYEIWGAKMUSQO"
    if ref == 1:
        reflectorB = {"A":"Y", "Y":"A","B":"R","R":"B","C":"U","U":"C","D":"H","H":"D","E":"Q","Q":"E","F":"S","S":"F","G":"L","L":"G","I":"P","P":"I","J":"X","X":"J","K":"N","N":"K","M":"O","O":"M","T":"Z","Z":"T","V":"W","W":"V" }
    if shift1 !=0:
        while shift1<0 or shift1>len(rotor1)-1:
            if shift1>len(rotor1):
                shift1 = shift1-len(rotor1)
            if shift1<0:
                shift1 = len(rotor1)+shift1
        rotor1 = rotor1[shift1:]+rotor1[0:shift1]
    if shift2 !=0:
        while shift2<0 or shift2>len(rotor2)-1:
            if shift2>len(rotor2):
                shift2 = shift2-len(rotor2)
            if shift2<0:
                shift2 = len(rotor2)+shift2
        rotor2 = rotor2[shift2:]+rotor2[0:shift2]
    if shift3 !=0:
        while shift3<0 or shift3>len(rotor3)-1:
            if shift3>len(rotor3):
                shift3 = shift3-len(rotor3)
            if shift3<0:
                shift3 = len(rotor3)+shift3
        rotor3 = rotor3[shift3:]+rotor3[0:shift3]
    res_text = ""
    result = ""
    for i in text:
        if i in rotor0:
            res_text += i
    for i in res_text:
        ind = rotor0.index(i)
        symbol = ""
        if rot3 == 3:
            symbol = rotor3[ind-(shift3-1)]
        if rot2 == 2:
            if rot3 == 3:
                ind = rotor0.index(symbol)
                symbol = rotor2[ind]
            else:
                symbol = rotor2[ind]
        if rot1 == 1:
            if rot2 == 2:
                ind = rotor0.index(symbol)
                symbol = rotor1[ind]
            else:
                symbol = rotor1[ind]
        symbol = reflectorB[symbol]
        if rot1 == 1:
            ind = rotor0.index(symbol)+shift1
            while (ind<0) or ind > (len(rotor0)-1):
                if ind>len(rotor3)-1:
                    ind = ind - len(rotor0)
                if ind<0:
                    ind = len(rotor0)-ind
            symbol = rotor0[ind]
            ind = rotor1.index(symbol)
            symbol = rotor0[ind]
        if rot2 == 2:
            ind = rotor0.index(symbol)+shift2
            while (ind<0) or ind > (len(rotor0)-1):
                if ind>len(rotor3)-1:
                    ind = ind - len(rotor0)
                if ind<0:
                    ind = len(rotor0)-ind
            symbol = rotor0[ind]
            ind = rotor2.index(symbol)
            symbol = rotor0[ind]
        if rot3 == 3:
            ind = rotor0.index(symbol)+shift3
            while (ind<0) or ind > (len(rotor0)-1):
                if ind>len(rotor3)-1:
                    ind = ind - len(rotor0)
                if ind<0:
                    ind = len(rotor0)-ind
            symbol = rotor0[ind]
            ind = rotor3.index(symbol)
            symbol = rotor0[ind]
        result += symbol
    return result
enigma(text="A", ref=1, rot1=1, shift1=-1, rot2=2, shift2=2, rot3=3, shift3=-1)