def main():
    L = int(input())
    M = int(input())
    N = int(input())

    tmp = L // 25
    M = M + tmp
    L = L - 25 * tmp

    tmp = M // 4
    N = N + tmp
    M = M - 4 * tmp

    O = 0
    tmp = N // 10
    O = O + tmp
    N = N - 10 * tmp

    print(sum((L,M,N)))

if __name__ == '__main__':
    main()