def main():
    l = input()
    m = input()
    n = input()
    print(logic(int(l), int(m), int(n)))


def logic(l: int, m: int, n: int) -> int:
    n_quotient = n // 25
    n_reminder = n % 25
    m = m + n_quotient

    m_quotient = (m * 25) // 100
    m_reminder = (m * 25) % 100
    m_reminder /= 25
    l = l + m_quotient

    l_quotient = (l * 100) // 1000
    l_reminder = (l * 100) % 1000
    l_reminder /= 100

    return int(n_reminder + m_reminder + l_reminder)
    

if __name__ == "__main__":
    main()