diff --git "a/LiiNi-coder/202603/11 BOJ \355\226\211\354\204\261\355\203\220\354\202\254.md" "b/LiiNi-coder/202603/11 BOJ \355\226\211\354\204\261\355\203\220\354\202\254.md"
new file mode 100644
index 00000000..a251d79e
--- /dev/null
+++ "b/LiiNi-coder/202603/11 BOJ \355\226\211\354\204\261\355\203\220\354\202\254.md"	
@@ -0,0 +1,53 @@
+```java
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.StringTokenizer;
+
+public class Main{
+	public static void main(String[] args)throws IOException{
+		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+		StringTokenizer st = new StringTokenizer(br.readLine());
+		int N = Integer.parseInt(st.nextToken());
+		int M = Integer.parseInt(st.nextToken());
+		int K = Integer.parseInt(br.readLine());
+		int[][] J = new int[N+1][M+1];
+		int[][] O = new int[N+1][M+1];
+		int[][] I = new int[N+1][M+1];
+
+		
+		for(int r = 1; r<=N; r++){
+			String line = br.readLine();
+			for(int c = 1 ; c<=M; c++){
+				char ch = line.charAt(c-1);
+				
+				J[r][c] = J[r-1][c] + J[r][c-1] - J[r-1][c-1];
+				O[r][c] = O[r-1][c] + O[r][c-1] - O[r-1][c-1];
+				I[r][c] = I[r-1][c] + I[r][c-1] - I[r-1][c-1];
+				if(ch == 'J')
+					J[r][c]++;
+				else if(ch == 'O')
+					O[r][c]++;
+				else
+					I[r][c]++;
+			}
+		}
+
+		StringBuilder sb = new StringBuilder();
+		for(int i=0; i<K; i++){
+			st = new StringTokenizer(br.readLine());
+			int a = Integer.parseInt(st.nextToken());
+			int b = Integer.parseInt(st.nextToken());
+			int c = Integer.parseInt(st.nextToken());
+			int d = Integer.parseInt(st.nextToken());
+			int j = J[c][d] - J[a-1][d] - J[c][b-1] + J[a-1][b-1];
+			int o = O[c][d] - O[a-1][d] - O[c][b-1] + O[a-1][b-1];
+			int ii = I[c][d] - I[a-1][d] - I[c][b-1] + I[a-1][b-1];
+
+			sb.append(j).append(" ").append(o).append(" ").append(ii).append("\n");
+		}
+
+		System.out.print(sb);
+	}
+}
+```