diff --git a/code_study/Baekjoon/c/9252.c b/code_study/Baekjoon/c/9252.c
new file mode 100644
index 0000000..274979c
--- /dev/null
+++ b/code_study/Baekjoon/c/9252.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <string.h>
+
+char s1[1001], s2[1001];
+char res[1001];
+int dp[1001][1001];
+
+int max(int a, int b) {
+    return a > b ? a : b;
+}
+
+int main() {
+    scanf("%s", s1);
+    scanf("%s", s2);
+    int l1 = strlen(s1), l2 = strlen(s2);
+
+    for(int i=1; i<=l1; i++) {
+        char c1 = s1[i-1];
+        
+        for(int j=1; j<=l2; j++) {
+            char c2 = s2[j-1];
+            
+            if(c1 == c2) dp[i][j] = dp[i-1][j-1] + 1;
+            else dp[i][j] = max(dp[i-1][j], dp[i][j-1]);
+        }
+    }
+
+    printf("%d\n",dp[l1][l2]);
+
+    if(dp[l1][l2] != 0) {
+        int res_len = dp[l1][l2];
+
+        int p1 = l1, p2 = l2;
+
+        while(p1 > 0 && p2 > 0) {
+            if(dp[p1][p2] == dp[p1-1][p2]) p1--;
+            else if(dp[p1][p2] == dp[p1][p2-1]) p2--;
+            else {
+                res[--res_len] = s1[p1-1];
+                p1--; p2--;
+            }
+        }
+
+        printf("%s\n", res);
+    }
+
+    return 0;
+}
\ No newline at end of file
diff --git a/code_study/Baekjoon/python/9085.py b/code_study/Baekjoon/python/9085.py
new file mode 100644
index 0000000..3f6ee7d
--- /dev/null
+++ b/code_study/Baekjoon/python/9085.py
@@ -0,0 +1,5 @@
+ans = []
+for _ in range(int(input())) :
+    input()
+    ans.append(sum(map(int, input().split())))
+print('\n'.join(list(map(str, ans))))
\ No newline at end of file