diff --git "a/weekly/week01/BOJ_0000_\354\230\210\354\213\234\353\254\270\354\240\234/gyuhyeok99.py" "b/weekly/week01/BOJ_0000_\354\230\210\354\213\234\353\254\270\354\240\234/gyuhyeok99.py"
deleted file mode 100644
index f393568..0000000
--- "a/weekly/week01/BOJ_0000_\354\230\210\354\213\234\353\254\270\354\240\234/gyuhyeok99.py"
+++ /dev/null
@@ -1,13 +0,0 @@
-# BOJ 0000: 예시 문제
-# https://www.acmicpc.net/problem/0000
-
-# 문제 풀이
-# 알고리즘: 구현
-# 시간 복잡도: O(n)
-
-def solution():
-    # 여기에 풀이 코드를 작성합니다
-    pass
-
-if __name__ == "__main__":
-    solution()
diff --git "a/weekly/week01/BOJ_10828_\354\212\244\355\203\235/gyuhyeok99.cpp" "b/weekly/week01/BOJ_10828_\354\212\244\355\203\235/gyuhyeok99.cpp"
new file mode 100644
index 0000000..dd7c834
--- /dev/null
+++ "b/weekly/week01/BOJ_10828_\354\212\244\355\203\235/gyuhyeok99.cpp"
@@ -0,0 +1,53 @@
+#include <iostream>
+#include <stack>
+
+using namespace std;
+
+stack<int> s;
+int n;
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(NULL); cout.tie(NULL);
+
+    cin >> n;
+    for(int i = 0; i < n; i++) {
+        string cmd;
+        int x;
+        cin >> cmd;
+
+        if (cmd == "push") {
+            cin >> x;
+            s.push(x);
+        }
+        else if (cmd == "pop") {
+
+            if (s.empty()) {
+                cout << -1 << endl;
+            }
+
+            else {
+                cout << s.top() << endl;
+                s.pop();
+            }
+        }
+        else if(cmd == "size") {
+            cout << s.size() << endl;
+        }
+        else if(cmd == "empty") {
+            if(s.empty()) {
+                cout << 1 << endl;
+            }else {
+                cout << 0 << endl;
+            }
+        }
+        else if(cmd == "top") {
+            if(s.empty()) {
+                cout << -1 << endl;
+            }
+            else {
+                cout << s.top() << endl;
+            }
+        }
+    }
+    return 0;
+}
diff --git "a/weekly/week01/BOJ_2750_\354\210\230 \354\240\225\353\240\254\355\225\230\352\270\260/gyuhyeok99.cpp" "b/weekly/week01/BOJ_2750_\354\210\230 \354\240\225\353\240\254\355\225\230\352\270\260/gyuhyeok99.cpp"
new file mode 100644
index 0000000..8375f82
--- /dev/null
+++ "b/weekly/week01/BOJ_2750_\354\210\230 \354\240\225\353\240\254\355\225\230\352\270\260/gyuhyeok99.cpp"	
@@ -0,0 +1,27 @@
+#include <iostream>
+#include <algorithm>
+#include <vector>
+
+using namespace std;
+
+int n;
+vector<int> v;
+int main() {
+    ios::sync_with_stdio(false);
+    cin.tie(NULL); cout.tie(NULL);
+
+    cin >> n;
+    for (int i = 0; i < n; i++) {
+        int x;
+        cin >> x;
+        v.push_back(x);
+    }
+
+    sort(v.begin(), v.end());
+
+    for (int num : v) {
+        cout << num << '\n';
+    }
+
+    return 0;
+}