20250919 baekjoon

code_study/Baekjoon/java/_1002.java

@@ -0,0 +1,27 @@
+import java.util.Scanner;
+
+public class _1002 {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int N = sc.nextInt();
+        int result;
+
+        for(int i=0; i<N; i++) {
+            int x1 = sc.nextInt(); int y1 = sc.nextInt(); int r1 = sc.nextInt();
+            int x2 = sc.nextInt(); int y2 = sc.nextInt(); int r2 = sc.nextInt();
+
+            double dist = Math.sqrt(Math.pow(x1-x2,2) + Math.pow(y1-y2,2));
+            double subDist = Math.abs(r1-r2);
+
+
+            if (dist == 0 && r1 == r2) result = -1; // 두 원이 일치할 때
+            else if (dist == r1 + r2 || dist == subDist) result = 1; // 두 원이 외접 or 내접할 때
+            else if (r1 + r2 > dist && dist > subDist) result = 2;
+            else result = 0;
+
+            System.out.println(result);
+        }
+
+        sc.close();
+    }
+}