N = int(input())
M = int(input())
i = 0
while True:
    if N**i <= M:
        i+=1
    else:
        break
tmp = M
ans = []

for j in range(i)[::-1]:
    for k in range(N)[::-1]:
        if k*N**j <= tmp:
            ans.append(str(k))
            tmp -= k*N**j
            break
print("".join(ans))