В мире информатики и математики

s=0

for a1 in range(1,9):

    for a2 in range(9):

        for a3 in range(9):

            for a4 in range(9):

                for a5 in range(9):

                    for a6 in range(9):

                        for a7 in range(9):

                            st=str(a1)+str(a2)+str(a3)+str(a4)+str(a5)+str(a6)+str(a7)

                            if a1 % 2 == 0 and a7 % 3 != 0 and st.count("6")>=1:

                                s=s+1

                                print(st)

print(s)

 

for i in range(101,110):
    a="5"*i
    while ("555" in a) or ("11" in a) or ("2" in a):
        if "555" in a:
            a=a.replace("555","1",1)
        if "11" in a:
            a=a.replace("11", "25",1)
        if "2" in a:
            a=a.replace("2", "5",1)
    if a=="15":
        print(i)

for x in range(2031):
    y=7**170+7**100-x
    st=""
    while y!=0:
        st=st+str(y%7)
        y=y//7
    st=st[::-1]
    if st.count("0")==71:
        print(x)


def F(n):
    if n==1:
        return 1
    if n>1:
        return 2*n*F(n-1)
print(F(1000))

for a in range(0,50000):
    a_fl=True
    for x in range(0,50000):
        if (((x&32765!=0) or (x&22635!=0))<=(x&a>0))==False:
            a_fl=False
            break
    if a_fl==True:
        print(a)