diff --git a/code_study/Baekjoon/c/10989.c b/code_study/Baekjoon/c/10989.c
new file mode 100644
index 0000000..fb9e3b9
--- /dev/null
+++ b/code_study/Baekjoon/c/10989.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+
+int main() {
+    int count[10000] = {0,};
+    int n, temp;
+    scanf("%d",&n);
+    for(int i=0; i<n; i++) {
+        scanf("%d",&temp);
+        count[temp-1]++;
+    }
+
+    int idx=0, cnt=0;
+    while(cnt!=n) {
+        if(count[idx]!=0) {
+            for(int i=0; i<count[idx]; i++) {
+                printf("%d\n",idx+1);
+            }
+            cnt += count[idx];
+        }
+        idx++;
+    }
+
+    return 0;
+}
\ No newline at end of file
diff --git a/code_study/Baekjoon/c/2775.c b/code_study/Baekjoon/c/2775.c
new file mode 100644
index 0000000..0dc8870
--- /dev/null
+++ b/code_study/Baekjoon/c/2775.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+int main() {
+    int arr[15][14];
+    for(int i=1; i<15; i++) {
+        arr[0][i-1] = i;
+    }
+    for(int i=1; i<15; i++) {
+        for(int j=0; j<14; j++) {
+            arr[i][j] = 0;
+            for(int k=0; k<=j; k++) {
+                arr[i][j] += arr[i-1][k];
+            }
+        }
+    }
+
+    int T,k,n;
+    scanf("%d",&T);
+    while(T--) {
+        scanf("%d %d",&k, &n);
+        printf("%d\n",arr[k][n-1]);
+    }
+
+    return 0;
+}
\ No newline at end of file
diff --git a/code_study/Baekjoon/js/2775.js b/code_study/Baekjoon/js/2775.js
new file mode 100644
index 0000000..723e35b
--- /dev/null
+++ b/code_study/Baekjoon/js/2775.js
@@ -0,0 +1,16 @@
+const N = require("fs").readFileSync(0, "utf8").toString().trim().split('\n').map(Number);
+let arr = Array.from({length : 15}, () => new Array(14).fill(0));
+arr[0] = arr[0].map((v,i) => v = i+1);
+for(let i=1; i<15; i++) {
+    arr[i].forEach((v, idx, row) => {
+        if(idx===0) row[idx] = 1;
+        else {
+            row[idx] = row[idx-1] + arr[i-1][idx];
+        }
+    });
+}
+
+for(let t=1; t<=N[0]; t++) {
+    let [k, n] = [N[2*t-1], N[2*t]-1];
+    console.log(arr[k][n]);
+}
\ No newline at end of file
diff --git a/code_study/Baekjoon/python/10989.py b/code_study/Baekjoon/python/10989.py
new file mode 100644
index 0000000..4695e96
--- /dev/null
+++ b/code_study/Baekjoon/python/10989.py
@@ -0,0 +1,10 @@
+import sys
+cnt = [0]*10000
+for _ in range(int(sys.stdin.readline())) :
+    cnt[int(sys.stdin.readline().strip())-1] += 1
+
+result = []
+for idx, c in enumerate(cnt,start=1) :
+    if c :
+        for _ in range(c):
+            print(idx)
\ No newline at end of file
diff --git a/code_study/Baekjoon/python/2775.py b/code_study/Baekjoon/python/2775.py
new file mode 100644
index 0000000..3de9cdb
--- /dev/null
+++ b/code_study/Baekjoon/python/2775.py
@@ -0,0 +1,11 @@
+arr = [[i+1 for i in range(14)] for _ in range(15)]
+for floor, row in enumerate(arr[1:],start=1) :
+        for num, v in enumerate(row):
+            if num==0 :
+                arr[floor][num] = 1
+            else :
+                arr[floor][num] = arr[floor][num-1] + arr[floor-1][num]
+
+for _ in range(int(input())) :
+    k, n = map(int, [input(), input()])
+    print(arr[k][n-1])
\ No newline at end of file