Compile Error
./Main.java:102: error: incompatible types: List<Integer> cannot be converted to Set<Integer>
if (checkPoint(pointList.get(key),pointList.get(sk),pos,r)){
^
./Main.java:111: error: incompatible types: List<Set<Integer>> cannot be converted to List<List<Integer>>
if (check(reach,blNum)){
^
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
2 errors
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