diff --git a/mjj111/DonutWithGraph.java b/mjj111/DonutWithGraph.java
deleted file mode 100644
index dea4196..0000000
--- a/mjj111/DonutWithGraph.java
+++ /dev/null
@@ -1,78 +0,0 @@
-// 3시 13분 시작 3시 54분 완료  약 40분 소요
-// 정점 도넛 막대 8자 그래프 반환
-// 정점 개수 100만개
-import java.util.*;
-class DonutWithGraph {
-    public int[] solution(int[][] edges) {
-        Map<Integer, Node> nodes = new HashMap<>();
-
-        for(int[] edge : edges) {
-            int start = edge[0];
-            int end = edge[1];
-
-            Node startNode;
-            if(!nodes.containsKey(start)) {
-                nodes.put(start, new Node(0,0));
-            }
-            startNode = nodes.get(start);
-
-            Node endNode;
-            if(!nodes.containsKey(end)) {
-                nodes.put(end, new Node(0,0));
-            }
-            endNode = nodes.get(end);
-
-            endNode.indegree++;
-            startNode.next++;
-            startNode.nexts.add(end);
-        }
-
-        int middleNodeIndex = 0;
-        int total = 0;
-        int eight = 0;
-        int line = 0;
-        int donut = 0;
-        int wannaRemove = 0;
-        for(Integer nodeIndex : nodes.keySet()) {
-            Node now = nodes.get(nodeIndex);
-            if(now.indegree == 0 && now.next >= 2) {
-                middleNodeIndex = nodeIndex;
-                total = now.next;
-
-                wannaRemove = nodeIndex;
-
-                for(int next : now.nexts) {
-                    nodes.get(next).indegree--;
-                }
-            }
-        }
-        nodes.remove(wannaRemove);
-
-        for(int nodeIndex : nodes.keySet()) {
-            Node now = nodes.get(nodeIndex);
-            if(now.indegree == 0) {
-                line++;
-            }
-            if(now.indegree == 2 && now.next == 2) {
-                eight++;
-            }
-        }
-
-        donut = total - eight - line;
-        // 정점 도넛 막대 8자 그래프 반환
-        int[] answer = new int[]{middleNodeIndex,donut, line, eight};
-        return answer;
-    }
-
-    class Node {
-        int indegree;
-        int next;
-        ArrayList<Integer> nexts = new ArrayList<>();
-
-        Node(int indegree, int next) {
-            this.indegree = indegree;
-            this.next = next;
-        }
-    }
-}
-