diff --git a/khj20006/202502/05 BOJ G2 Catch-Up.md b/khj20006/202502/05 BOJ G2 Catch-Up.md
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+```java
+
+import java.util.*;
+import java.io.*;
+
+class Main {
+	
+	// IO field
+	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+	static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+	static StringTokenizer st;
+
+	static void nextLine() throws Exception {st = new StringTokenizer(br.readLine());}
+	static int nextInt() {return Integer.parseInt(st.nextToken());}
+	static long nextLong() {return Long.parseLong(st.nextToken());}
+	static void bwEnd() throws Exception {bw.flush();bw.close();}
+	
+	// Additional field
+	static int gcd(int a, int b) {
+		if(a < b) {
+			int temp = a;
+			a = b;
+			b = temp;
+		}
+		return a%b==0 ? b : gcd(b,a%b);
+	}
+	
+	public static void main(String[] args) throws Exception {
+
+		nextLine();
+		int a = nextInt();
+		int b = nextInt();
+		int c = nextInt();
+		int d = nextInt();
+
+		if((b-a)*(d-c) < 0) bw.write("NO");
+		else if(b==a || c==d) bw.write(b-a == d-c ? "YES":"NO");
+		else bw.write("YES");
+
+		bwEnd();
+	}
+
+}
+
+```