for i in range(1000, 10000):
    q = i // 1000 % 10
    b = i // 100 % 10
    s = i // 10 % 10
    g = i // 1 % 10
    if q == g and b == s:
        print(i)
/**************************************************************
	Problem: 1447
	User: admin
	Language: Python
	Result: Accepted
	Time:50 ms
	Memory:34244 kb
****************************************************************/