"""Write a program, which will find all such numbers between 1000 and 3000 (both included)
such that each digit of the number is an even number.
The numbers obtained should be printed in a comma-separated sequence on a single line."""

word=[]
for i in range(1000,3001):
    s=str(i)
    if(int(s[0])%2==0 and int(s[1])%2==0 and int(s[2])%2==0 and int(s[3])%2==0):
        word.append(s)
print(",".join(word))