I use to include the following code into my headers because I saw others doing the same.
#pragma comment(linker, "/stack:200000000") #pragma GCC optimize("Ofast") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
For the most part, it has made some of my programs that previously got TLE get AC. However I recently kept getting TLE with these comments in the header of my program for a problem, and when I removed them, I got AC. So I'm wondering what do these comments do, and when should I use them? Thanks in advance!
Here is the TLE: http://codeforces.com/contest/1009/submission/40353118
Here is the AC: http://codeforces.com/contest/1009/submission/40353105
You can check the only difference is the pragma.