[20250214] BOJ / G3 / 미친 아두이노 / 권혁준

Author: oncsr

khj20006/202502/14 BOJ G3 미친 아두이노.md

@@ -0,0 +1,115 @@
+```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 R, C;
+    static char[][] arr;
+    static char[] command;
+    static int x, y;
+    static List<int[]> crazy;
+    static int[] dx = {0,1,1,1,0,0,0,-1,-1,-1};
+    static int[] dy = {0,-1,0,1,-1,0,1,-1,0,1};
+	
+	public static void main(String[] args) throws Exception {
+		
+		ready();
+		solve();
+	
+		bwEnd();
+		
+	}
+	
+	static void ready() throws Exception{
+		
+		nextLine();
+        R = nextInt();
+        C = nextInt();
+        arr = new char[R][C];
+        crazy = new ArrayList<>();
+
+        for(int i=0;i<R;i++) {
+            char[] temp = br.readLine().toCharArray();
+            for(int j=0;j<C;j++){
+                arr[i][j] = temp[j];
+                if(temp[j] == 'I') {
+                    x = i;
+                    y = j;
+                }
+                if(temp[j] == 'R') crazy.add(new int[]{i,j});
+            }
+        }
+        command = br.readLine().toCharArray();
+
+	}
+	
+	static void solve() throws Exception{
+		
+        int cnt = 0;
+        for(char i:command){
+            cnt++;
+            if(!move(i-'0')) {
+                bw.write("kraj "+cnt+"\n");
+                return;
+            }
+        }
+
+        arr = new char[R][C];
+        for(int i=0;i<R;i++) Arrays.fill(arr[i], '.');
+        arr[x][y] = 'I';
+        for(int[] arduino:crazy) arr[arduino[0]][arduino[1]] = 'R';
+
+        for(int i=0;i<R;i++){
+            for(int j=0;j<C;j++) bw.write(arr[i][j]);
+            bw.write("\n");
+        }
+		
+	}
+
+    static boolean move(int dir){
+        
+        x += dx[dir];
+        y += dy[dir];
+
+        int[][] cnt = new int[R][C];
+
+        for(int[] arduino:crazy){
+
+            if(arduino[0] > x) arduino[0]--;
+            else if(arduino[0] < x) arduino[0]++;
+
+            if(arduino[1] > y) arduino[1]--;
+            else if(arduino[1] < y) arduino[1]++;
+
+            cnt[arduino[0]][arduino[1]]++;
+
+            if(arduino[0] == x && arduino[1] == y) return false;
+        }
+
+
+        crazy = new ArrayList<>();
+
+        for(int i=0;i<R;i++) for(int j=0;j<C;j++){
+            if(cnt[i][j] == 1) crazy.add(new int[]{i,j});
+        }
+
+        return true;
+
+    }
+	
+}
+
+```