I have java version 1.8.0_65 installed in my mac laptop, whenever I try to run topcoder ContestAppletProd.jnlp file, it shows "Application blocked by Java Security, reason: Your security settings have blocked an application signed in with an expired or not yet valid certificate from running". I know these problem have been posted tons of time, and some people suggest unintstaling java 8 and then installing some older version, but so far I could not even uninstall java 8. Can anyone please help? :(

In general, both STL set and map has O(log(N)) complexity for insert, delete, search etc operations. But in some problems, where N<=10^5, O(NlogN) algorithms using set gives TLE, while map gets AC. Can someone please explain how map gives a better runtime than set? Thanks in advance :)

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=12&page=show_contest&contest=345