diff --git a/src/BaekJoon/sa11k/10250/Main.java b/src/BaekJoon/sa11k/10250/Main.java
deleted file mode 100644
index 4d36fa0..0000000
--- a/src/BaekJoon/sa11k/10250/Main.java
+++ /dev/null
@@ -1,22 +0,0 @@
-import java.io.*;
-import java.util.*;
-
-class Main {
-
-    public static void main(String[] args) throws Exception {
-        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
-        int T = Integer.parseInt(br.readLine());
-
-        for(int tc = 1; tc<=T; tc++){
-            StringTokenizer st = new StringTokenizer(br.readLine(), " ");
-            int H = Integer.parseInt(st.nextToken());
-            int W = Integer.parseInt(st.nextToken());
-            int N = Integer.parseInt(st.nextToken());
-
-           if(N % H == 0) System.out.println((H * 100) + N / H);
-           else System.out.println(((N % H) * 100) + ((N / H) + 1));
-        }
-
-        br.close();
-    }
-}
\ No newline at end of file
diff --git a/src/BaekJoon/sa11k/7568/Main.java b/src/BaekJoon/sa11k/7568/Main.java
deleted file mode 100644
index 6e419e0..0000000
--- a/src/BaekJoon/sa11k/7568/Main.java
+++ /dev/null
@@ -1,35 +0,0 @@
-import java.io.*;
-import java.util.*;
-
-class Main {
-
-    public static void main(String[] args) throws Exception {
-        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
-        int N = Integer.parseInt(br.readLine());
-        int[][] people = new int[N][N];
-        int[] grades = new int[N];
-
-        for(int i = 0; i<N; i++){
-            grades[i] = 1;
-        }
-
-        for(int i = 0; i<N; i++){
-            StringTokenizer st = new StringTokenizer(br.readLine(), " ");
-            people[i][0] = Integer.parseInt(st.nextToken());
-            people[i][1] = Integer.parseInt(st.nextToken());
-        }
-
-        for(int i = 0; i<N-1; i++){
-            for(int j = i+1; j<N; j++){
-                if(people[i][0] < people[j][0] && people[i][1] < people[j][1]) grades[i]++;
-                else if(people[i][0] > people[j][0] && people[i][1] > people[j][1]) grades[j]++;
-            }
-        }
-
-        for(int grade : grades){
-            System.out.print(grade+" ");
-        }
-
-        br.close();
-    }
-}
\ No newline at end of file
diff --git a/src/BaekJoon/sa11k/9012/Main.java b/src/BaekJoon/sa11k/9012/Main.java
deleted file mode 100644
index fe54e3a..0000000
--- a/src/BaekJoon/sa11k/9012/Main.java
+++ /dev/null
@@ -1,39 +0,0 @@
-import java.io.*;
-import java.util.*;
-
-class Main {
-
-    public static void main(String[] args) throws Exception {
-        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
-        int N = Integer.parseInt(br.readLine());
-
-        for(int i = 0; i<N; i++){
-            String s = br.readLine();
-            Stack<Character> stack = new Stack<>();
-            String result = "YES";
-
-            for(int j = 0; j<s.length(); j++){
-                char c = s.charAt(j);
-                if(stack.isEmpty()){
-                    if(c == ')') {
-                        result = "NO";
-                        break;
-                    }
-                    stack.push(c);
-                }
-                else{
-                    if(c == '(') stack.push(c);
-                    if(c == ')'){					// 오른쪽 소괄호라면
-                        char before = stack.pop();			// 이전 것 pop()
-                        if(before != '(') result = "NO";
-                    }
-                }
-            }
-
-            if(!stack.isEmpty()) result = "NO";
-
-            System.out.println(result);
-        }
-        br.close();
-    }
-}
\ No newline at end of file