Please take a look at: 4021643 and 6576225. They are exactly same but one runs in 2s the other in 0.1s. Accepted solution was sent 10 month later. Again I submitted same solution after 8 years and got TLE 130976507 while in my computer, runs in just 0.188s

$time ./block_towers
real	0m0.188s
user	0m0.132s
sys	0m0.036s

Whats going on? I think it would be a good idea to improve FPC version from 3.0.4 to 3.2.0;

Thanks (^_^)/