[20250317] BOJ / G1 / 판드랄추 / 권혁준

Author: oncsr

khj20006/202503/17 BOJ G1 판드랄추.md

@@ -0,0 +1,69 @@
+```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 = new StringTokenizer("");
+
+	static void nextLine() throws Exception {st = new StringTokenizer(br.readLine());}
+	static int nextInt() throws Exception {
+		if(!st.hasMoreTokens()) nextLine();
+		return Integer.parseInt(st.nextToken());
+	}
+	static long nextLong() throws Exception {
+		if(!st.hasMoreTokens()) nextLine();
+		return Long.parseLong(st.nextToken());
+	}
+	static void bwEnd() throws Exception {bw.flush();bw.close();}
+	
+	// Additional field
+	
+	static int a, b;
+	
+	public static void main(String[] args) throws Exception {
+		
+		for(int T=nextInt();T-->0;) {
+			
+			ready();
+			solve();
+		}
+	
+		bwEnd();
+		
+	}
+	
+	static void ready() throws Exception{
+		
+		a = nextInt();
+		b = nextInt();
+		
+		
+	}
+	
+	static void solve() throws Exception{
+		
+		
+		char g = 'A';
+		if(a<b) {
+			int t = a;
+			a = b;
+			b = t;
+			g = 'B';
+		}
+		if((a+b)%2 == 1) bw.write("-1\n");
+		else {
+			int half = (a-b)/2;
+			if(half > 0 && (half&a) == half) bw.write("1\n" + g + " " + half + "\n");
+			else bw.write("2\n" + g + " " + half + "\n" + g + " " + half + "\n");			
+		}
+		
+	}
+	
+}
+
+```