import sequtils,strutils

proc ctoi(c : char): int =
    return ord(c) - ord('0')
    
proc stringmod(s : string, m : int) : int =
    var
        ans = 0
    for i in 0..s.high:
        ans *= 10
        ans += s[i].ctoi
        ans = ans mod m
    return ans

var
    N = stdin.readline
    M = stdin.readline
    t : int
    m = N[^1].ctoi
    e = m * m

if M == "0":
    echo 1
else:
    if m == 0:
        echo 0
        
    elif m == 1:
        echo 1
        
    elif m == 2:
        case stringmod(M, 4)
        of 0:
            echo 6
        of 1:
            echo 2
        of 2:
            echo 4
        of 3:
            echo 8
        else:
            discard
            
    elif m == 3:
        case stringmod(M, 4)
        of 0:
            echo 1
        of 1:
            echo 3
        of 2:
            echo 9
        of 3:
            echo 7
        else:
            discard
            
    elif m == 4:
        case stringmod(M, 2)
        of 0:
            echo 6
        of 1:
            echo 4
        else:
            discard
            
        
    elif m == 5:
        echo 5
        
    elif m == 6:
        echo 6
        
    elif m == 7:
        case stringmod(M, 4)
        of 0:
            echo 1
        of 1:
            echo 7
        of 2:
            echo 9
        of 3:
            echo 3
        else:
            discard
            
    elif m == 8:
        case stringmod(M, 4)
        of 0:
            echo 6
        of 1:
            echo 8
        of 2:
            echo 4
        of 3:
            echo 2
        else:
            discard
    
    elif m == 9:
        case stringmod(M, 2)
        of 0:
            echo 1
        of 1:
            echo 9
        else:
            discard