刚刚在某 blog 看见了这个：

For the TLE case, I would prefer not resubmitting unless I have a clear counterexample that makes the solution definitely TLE. This is because codeforces rechecks the solution up to 3 times when the verdict is TLE, to check if the cause is really the solution or just a noise in the measurement. You can abuseutilize this to your advantage however you want.

所以说 CF 会重复运行 3 次才判定 TLE?