from fractions import Fraction as Frac

N, M, K = map(int, input().split())


def solve() -> Frac:
    # 2. で当たりを選び、K 個のドアが開いた後で当たりを選ぶ
    a = Frac(M, N) * Frac(M-1, N-K-1)

    # 2. でハズレを選び、K 個のドアが開いた後で当たりを選ぶ
    b = Frac(N-M, N) * Frac(M, N-K-1)

    return a + b


ans = solve()
print(ans.numerator, ans.denominator)