N = int(input())
cnt = [3] * (N+1)

val = []
i = 1
add = 1
while i <= N:
    cnt[i] = 1
    val.append(i)
    for j in val:
        if i + j <= N:
            cnt[i + j] = min(cnt[i + j], 2)
    add += 1
    i += add

print(cnt[N])