hello,
In May of 2016 I have submitted solution to PALIN (the last submission ID 17012334), which gave me time 0.01 and memory usage 6.6M
Recently, I have remembered about it and decided to do a little fix, which gave me time 0.00 and mem usage 16384M (id 18747913). Then, I decided to resubmit ID 18747913 source and it gave me the same state: 0.00 time and 16384M mem usage.
Then, I decided to resubmit some of my previous submissions and it gave me the same stats.