[20250206] BOJ / 실버1 / 오목 / 김수연

suyeun84/202502/06 BOJ S1 오목.md

@@ -0,0 +1,66 @@
+```java
+import java.util.*;
+import java.io.*;
+
+class Solution
+{
+	static int[][] dir = new int[][] {{1,0},{0,1},{1,1},{-1,1}};
+	static int[][] board = new int[19][19];
+	static Point answer = new Point(-1,-1,-1);
+
+    public static void main(String[] args) throws Exception{
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st;
+
+	    for (int i = 0; i < 19; i++) {
+	    	st = new StringTokenizer(br.readLine());
+	    	for (int j = 0; j < 19; j++) {
+	    		board[i][j] = Integer.parseInt(st.nextToken());
+	    	}
+	    }
+
+	    for (int i = 0; i <19; i++) {
+	    	for (int j = 0; j < 19; j++) {
+	    		if (board[i][j] == 1 || board[i][j] == 2) {
+	    			check(i, j, board[i][j]);
+	    		}
+	    	}
+	    }
+	    if (answer.x == -1) System.out.println(0);
+	    else {
+	    	System.out.println(answer.type);
+		    System.out.println(answer.y + " " + answer.x);
+	    }
+    }
+
+    public static void check(int y, int x, int type) {
+    	for (int[] d : dir) {
+    		int cnt = 1;
+    		int ny = y + d[0];
+    		int nx = x + d[1];
+
+    		while (ny >= 0 && ny < 19 && nx >= 0 && nx < 19 && board[ny][nx] == type) {
+    			cnt += 1;
+    			ny += d[0];
+    			nx += d[1];
+    		}
+    		if (cnt == 5) {
+    			if (y-d[0] >= 0 && x-d[1] >= 0 && y-d[0] < 19 && board[y-d[0]][x-d[1]] == type) continue; 
+    			answer = new Point(y+1, x+1, type);
+    		}
+    	}
+    }
+
+    static class Point {
+    	int y;
+    	int x;
+    	int type;
+    	public Point(int y, int x, int type) {
+    		this.y = y;
+    		this.x = x;
+    		this.type = type;
+    	}
+    }
+}
+
+```