def f(r):
    r = [i + 1 for i, x in enumerate(r) if x == "o" and r[i-1] == "x"]
    return len(r), " ".join(map(str, r))


n_k = input()
a = input()

a = [int(x) for x in a.split(" ")]
k = n_k.split(" ")[1]
min_a = sorted(a)[int(k) - 1]
r = ["x" if x <= min_a else "o" for x in a]
l1, l2 = f("".join(r))
print(l1)
print(l2)