# First Uniqye Character in a String

from collections import Counter

class Solution:
    def firstUniqChar(self, s: str) -> int:
        c = Counter(s)
        for key in c:
            if c[key] == 1:
                return s.index(key)
        else:
            return -1
        

"""
걸린 시간: 10:24~

복잡도: 

해설: 
"""