diff --git "a/4st/Eunseong/\353\214\200\354\266\251 \353\247\214\353\223\240 \354\236\220\355\214\220.java" "b/4st/Eunseong/\353\214\200\354\266\251 \353\247\214\353\223\240 \354\236\220\355\214\220.java"
new file mode 100644
index 00000000..6191f18c
--- /dev/null
+++ "b/4st/Eunseong/\353\214\200\354\266\251 \353\247\214\353\223\240 \354\236\220\355\214\220.java"	
@@ -0,0 +1,33 @@
+import java.util.HashMap;
+
+class Solution {
+    public int[] solution(String[] keymap, String[] targets) {
+        HashMap<Character, Integer> keyCnt = new HashMap<>();
+        int[] answer = new int[targets.length];
+        
+        for (String s : keymap) {
+            for (int i = 0; i < s.length(); i++) {
+                char c = s.charAt(i);
+                if (keyCnt.containsKey(c)) {
+                    if (keyCnt.get(c) > i + 1) {
+                        keyCnt.put(c, i + 1);
+                    }
+                } else {
+                    keyCnt.put(c, i + 1);
+                }
+            }
+        }
+        
+        for (int i = 0; i < targets.length; i++) {
+            for (char c : targets[i].toCharArray()) {
+                if (keyCnt.containsKey(c)) {
+                    answer[i] += keyCnt.get(c);
+                } else {
+                    answer[i] = -1;
+                    break;
+                }
+            }
+        }
+        return answer;
+    }
+}
\ No newline at end of file
diff --git "a/4st/Eunseong/\354\243\274\354\213\235\352\260\200\352\262\251.java" "b/4st/Eunseong/\354\243\274\354\213\235\352\260\200\352\262\251.java"
new file mode 100644
index 00000000..72a8b1ab
--- /dev/null
+++ "b/4st/Eunseong/\354\243\274\354\213\235\352\260\200\352\262\251.java"
@@ -0,0 +1,17 @@
+class Solution {
+    public int[] solution(int[] prices) {
+        int len = prices.length;
+        int[] answer = new int[len];
+        for (int i = 0; i < len - 1; i++) {
+            int t = len - i - 1;
+            for (int j = i + 1; j < len; j++) {
+                if (prices[i] > prices[j]) {
+                    t = j - i;
+                    break;
+                }
+            }
+            answer[i] = t;
+        }
+        return answer;
+    }
+}
\ No newline at end of file