Merge pull request #1809 from choifi/choiminji

[최민지] Day13

Author: 724thomas

leetcode3/최민지/3803.py

@@ -0,0 +1,11 @@
+class Solution:
+    def residuePrefixes(self, s: str) -> int:
+        result = 0
+
+        for i in range(1, len(s) + 1):
+            prefix = s[:i]
+
+            if len(set(prefix)) == len(prefix) % 3:
+                result += 1
+        
+        return result