diff --git "a/leetcode2/2medium/\354\241\260\354\235\200\353\271\204/3039.py" "b/leetcode2/2medium/\354\241\260\354\235\200\353\271\204/3039.py"
new file mode 100644
index 00000000..3c693e20
--- /dev/null
+++ "b/leetcode2/2medium/\354\241\260\354\235\200\353\271\204/3039.py"
@@ -0,0 +1,16 @@
+class Solution:
+    def lastNonEmptyString(self, s: str) -> str:
+        # 아 첨 등장하는 알파벳 지우기
+        # 마지막 operation 전 결과 출력
+        arr = []
+        last_l = ''
+
+        for l in s:
+            arr.append(l)
+            print(arr)
+
+        for l in arr:
+            if l == last_l:
+                pass
+            else:
+                pass
diff --git "a/leetcode2/2medium/\354\241\260\354\235\200\353\271\204/848.py" "b/leetcode2/2medium/\354\241\260\354\235\200\353\271\204/848.py"
new file mode 100644
index 00000000..453363ff
--- /dev/null
+++ "b/leetcode2/2medium/\354\241\260\354\235\200\353\271\204/848.py"
@@ -0,0 +1,8 @@
+class Solution:
+    def shiftingLetters(self, s: str, shifts: List[int]) -> str:
+        i = 0
+
+        for l in s:
+            print(l, shifts[i])
+            a = ord(l) + ord()
+            i+=1
\ No newline at end of file