https://mirror.codeforces.com/edu/course/2/lesson/7/1/practice/contest/289390/problem/C

in this problem if i used path compression get wrong answer and accept without path compression can any one explain why

this code that get wrong answer https://mirror.codeforces.com/edu/course/2/lesson/7/1/practice/contest/289390/submission/132622662

this code that get accept https://mirror.codeforces.com/edu/course/2/lesson/7/1/practice/contest/289390/submission/132624996

If you could give an test , that would be great