def main():
    L = int(input())
    M = int(input())
    N = int(input())
    
    o = int(N/25) + M
    p = int(o/4)  + L

    R = (N - int(N/25) * 25) + (o - int(o/4) * 4) + (p - int(p/10) * 10)
    print(R)
    

if __name__ == '__main__':
    main()