Got this question in my recent onsite with one of the faang.

Question:
Return true if all the given relations do not create conflict or return false.

Input [["a",">","b"],["b",">","c"]] --> return True (no conflicts)

Input [ ["a",">","b"],["b",">","c"], ["c",">","a"]] --> return False

Input [ ["a",">","b"],["b",">","c"], ["c","<","a"]] --> return True

Input [ ["a",">","b"],["b",">","c"], ["c","<","d"]] --> return True

Follow-up :
given ["a",">","0"],["b","<","a"],["b",">","1"] --> return False
How to approach the follow-up question.