Today's Edu round, lots of people were hacked of problem B&C. Most of them got TLE. I think, to avoid this, we should make pretest more strong, or just make the time limit shorter. The writers should think about some wrong solutions that would get TLE and check them if they could pass the pretests. What do you think?

BTW, I want to mention that algoskipper, progskipper and _jaink_1208_ is hacking each other. Their solution to the problem A is very similar. And it leaves an unreasonable thing in the code:

if(t == 116) {
    return 0;
  }

I think they may be alts, and they want their rating lower. Please ban them.