def attackList(accessList, m, n):


    #Create a function to return the dates converted to seconds
    def tosecond(s):
        #Choose 170101000000 as the point of reference
        month = {'01':0, '02':2678400, '03':5097600, '04':7776000, '05':10368000, '06':13046400, '07': 15638400, '08':18316800, '09': 20995200, '10':23587200, '11':26265600, '12':28857600}
        result = (int(s[:2])-17)*31536000
        result += month[s[2:4]]
        result += int(s[4:6])*24*60**2
        result += int(s[6:8])*60**2
        result += int(s[8:10])*60
        result += int(s[10:12])
        return result

    #A function calculating if the two dates is within m mins
    def iswithin(s1,s2):
        difference = abs(s1 - s2)
        if difference <= m*60:
            return True
        else:
            return False

    #A list of distinct usernames
    name = []
    for e in accessList:
        if e[13:] not in name:
            name.append(e[13:])


    if n == 1:
        return sorted(name)

    hack = []
    for e in name:
        accessTime = []
        count = 1
        for j in accessList:
            if j[13:] == e:
                accessTime.append(tosecond(j))
        sorted(accessTime)    #A sorted list of access time of the e user

        for i in range(len(accessTime) - 1):
            if iswithin(accessTime[i],accessTime[i+1]):
                count +=1
                if count == n and iswithin(accessTime[i+2-n],accessTime[i+1]):
                    hack.append(e)
                    break
            else:
                count = 1

    return sorted(hack)