from collections import Counter class Solution: def isCongruent(self, s: str, c: str) -> int: if len(s) != len(c): return -1 count = [0] * 26 for i in s: count[ord(i) - ord("a")] += 1 for i in c: count[ord(i) - ord("a")] -= 1 for i in range(26): if count[i] != 0: return -1 return len(s)