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

    M = M + (N // 25)
    N = N % 25
    L = L + (M // 4)
    M = M % 4
    L = L % 10
    print(L + M + N)

if __name__ == '__main__':
    main()