In most of the big contests, if there is any practice round, It is usually observed that just copy paste of the previous year problem is given…
Actually, (almost) everyone actually solves these problem before participating. So, It becomes very boring.
Example : ICPC online practice round, Also I got to know in ICPC regional practice rounds, just previous year problem is given.
So, I think It would be better to ask new problems if possible…
If it is not feasible to set new questions just or practice round, Even asking random questions from other contest would be better.
Everyone please suggest your opinion here on this.
And let them decide.