[20250831] BOJ / G5 / 개똥벌레 / 이강현

Author: lkhyun

lkhyun/202508/31 BOJ G5 개똥벌레.md

@@ -0,0 +1,50 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    static StringTokenizer st;
+    static int N,H;
+
+    public static void main(String[] args) throws IOException {
+        st = new StringTokenizer(br.readLine());
+        N = Integer.parseInt(st.nextToken());
+        H = Integer.parseInt(st.nextToken());
+
+        int[] top = new int[H+1];
+        int[] bot = new int[H+1];
+        for (int i = 0; i < N; i++) {
+            int cur = Integer.parseInt(br.readLine());
+            if(i%2 == 0){
+                bot[cur]++;
+            }else{
+                top[cur]++;
+            }
+        }
+
+        for (int i = H-1; i > 1; i--) {
+            bot[i-1] += bot[i];
+        }
+        for (int i = H-1; i > 1; i--) {
+            top[i-1] += top[i];
+        }
+
+        int min = N;
+        int cnt = 0;
+        for (int i = 1; i <= H; i++) {
+            int cur = top[H-i+1] + bot[i];
+            if(min == cur){
+                cnt++;
+            }else if(min > cur){
+                min = cur;
+                cnt = 1;
+            }
+        }
+
+        bw.write(min+" "+cnt);
+        bw.close();
+    }
+}
+```