diff --git a/code_study/Baekjoon/python/10816.py b/code_study/Baekjoon/python/10816.py
new file mode 100644
index 0000000..bddfe60
--- /dev/null
+++ b/code_study/Baekjoon/python/10816.py
@@ -0,0 +1,5 @@
+from collections import Counter
+input()
+count = Counter(input().split())
+input()
+print(' '.join(str(count[k]) for k in input().split()))
\ No newline at end of file
diff --git a/code_study/Baekjoon/ts/10816.ts b/code_study/Baekjoon/ts/10816.ts
new file mode 100644
index 0000000..f4bd673
--- /dev/null
+++ b/code_study/Baekjoon/ts/10816.ts
@@ -0,0 +1,7 @@
+const input: string[] = require("fs").readFileSync(0, "utf8").toString().trim().split("\n");
+let counter: Map<number, number> = new Map<number, number>();
+for(let n of input[1].split(" ").map(Number)){
+    counter.set(n,(counter.get(n) || 0) + 1);
+}
+const result: string = input[3].split(" ").map(Number).map(n => counter.get(n) || 0).join(" ");
+console.log(result);
\ No newline at end of file
diff --git a/code_study/Baekjoon/ts/11773.ts b/code_study/Baekjoon/ts/11773.ts
new file mode 100644
index 0000000..ebf8ff3
--- /dev/null
+++ b/code_study/Baekjoon/ts/11773.ts
@@ -0,0 +1,14 @@
+export {}
+const input:number[] = require("fs").readFileSync(0,"utf8").toString().trim().split('\n').map(Number);
+let stack:number[] = [];
+input.forEach((v,i) => {
+    if(i!==0){
+        if(v===0){
+            stack.pop();
+        }
+        else {
+            stack.push(v);
+        }
+    }
+});
+console.log(stack.reduce((acc,v) => acc + v, 0));
\ No newline at end of file