Merge pull request #405 from AlgorithmWithGod/suyeun84

[20250701] BOJ / G4 / 램프 / 김수연

Author: ShinHeeEul

suyeun84/202507/01 BOJ G4 램프.md

@@ -0,0 +1,37 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class boj1034 {
+	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+	static StringTokenizer st;
+	static void nextLine() throws Exception {st = new StringTokenizer(br.readLine());}
+	static int nextInt() {return Integer.parseInt(st.nextToken());}
+	
+	public static void main(String[] args) throws Exception {
+		nextLine();
+		int N = nextInt();
+		int M = nextInt();
+		int answer = 0;
+		String[] input = new String[N];
+		for (int i = 0; i < N; i++) input[i] = br.readLine();
+		HashMap<String, Integer> map = new HashMap<>();
+        int K = Integer.parseInt(br.readLine());
+        for (int i = 0; i < N; i++) {
+            int count = 0;
+            for (int j = 0; j < M; j++) {
+                if (input[i].charAt(j) == '0') {
+                    count++;
+                }
+            }
+            if (count <= K && count % 2 == K % 2) {
+                map.put(input[i], map.getOrDefault(input[i], 0) + 1);
+                if (map.get(input[i]) > answer) {
+                    answer = map.get(input[i]);
+                }
+            }
+        }
+        System.out.println(answer);
+	}
+}
+```