sokr

n = int(input())

a = n // 2 if n % 2 == 1 else n // 2 - 1
b = n - a

while True:
    a_temp = a
    b_temp = b
    while a_temp % b_temp != 0:
        a_temp, b_temp = b_temp, a_temp % b_temp

    if b_temp > 1:
        a -= 1
        b += 1
    else:
        break

print(a, b)