Merge pull request #953 from AlgorithmWithGod/Ukj0ng

[20250922] BOJ / G5 / 멍멍이 쓰다듬기 / 한종욱

Author: ShinHeeEul

Ukj0ng/202509/22 BOJ G5 멍멍이 쓰다듬기.md

@@ -0,0 +1,42 @@
+```
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    private static long X, Y, diff;
+
+    public static void main(String[] args) throws IOException {
+        init();
+        long answer = solve();
+        bw.write(answer + "\n");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static void init() throws IOException {
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        X = Long.parseLong(st.nextToken());
+        Y = Long.parseLong(st.nextToken());
+        diff = Y - X;
+    }
+
+    private static long solve() {
+        if (diff == 0) {
+            return 0;
+        }
+
+        long k = (long) Math.sqrt(diff);
+
+        if (k * k == diff) {
+            return 2 * k - 1;
+        } else if (diff <= k * k + k) {
+            return 2 * k;
+        } else {
+            return 2 * k + 1;
+        }
+    }
+}
+```