[HackerRank-python] Library Fine

def libraryFine(d1, m1, y1, d2, m2, y2):
    # Write your code here
    fine = 0
    
    if y1 <= y2 and m1 <= m2 and d1 <= d2:
        return fine
    else:
        if y1 == y2 and m1 == m2 and d1 >= d2:
            d_diff = d1 - d2
            fine += (15 * d_diff)
        elif y1 == y2 and m1 >= m2:
            m_diff = m1 - m2
            fine += (500 * m_diff)
        elif y1 >= y2:
            y_diff = y1 - y2
            fine += (10000 * y_diff)
        
    return fine