https://rtn-team.cc/ Registration Challenge Solver

script.py

state = ()  
n=400
i = 0
while n<1400:
    if n%9==0:
        if str(n) == str(n)[::-1]:
            print(n)
            i=n
            state+= (i,)
    n=n+1
a = sum(state)
print(a) # The final answer