dat=[6,2,5,5,4,5,6,4,7,6]
def f(x):
    if 0<=x<10:
        return dat[x]
    if x>=10:
        return f(x//10)+f(x%10)
    if x<0:
        return 1+f(-x)
count=[0 for i in range(1400001)]

P,N=map(int,input().split())
if N==0:
    print(P)
else:
    A=0
    if P<0:
        P*=-1
        A+=1
    for c in str(P):
        A+=f(int(c))
    P=A
    cnt=1
    L=[0]
    while count[P]==0:
        count[P]=cnt
        if cnt==N:
            print(P)
            break
        L+=[P]
        cnt+=1
        P=f(P)
    else:
        print(L[count[P]+(N-count[P])%(cnt-count[P])])