Merge pull request #1839 from AlgorithmWithGod/zinnnn37

[20260126] BOJ / G5 / 기타 레슨 / 김민진

Author: ShinHeeEul

zinnnn37/202601/26 BOJ G5 기타 레슨.md

@@ -0,0 +1,71 @@
+```java
+import java.io.*;
+import java.util.StringTokenizer;
+
+public class BJ_2343_기타_레슨 {
+
+    private static final BufferedReader  br = new BufferedReader(new InputStreamReader(System.in));
+    private static final BufferedWriter  bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    private static       StringTokenizer st;
+
+    private static int N, M, left, right, ans;
+    private static int[] lessons;
+
+    public static void main(String[] args) throws IOException {
+        init();
+        sol();
+    }
+
+    private static void init() throws IOException {
+        st = new StringTokenizer(br.readLine());
+        N = Integer.parseInt(st.nextToken());
+        M = Integer.parseInt(st.nextToken());
+
+        left = right = 0;
+        ans = Integer.MAX_VALUE;
+        lessons = new int[N];
+
+        st = new StringTokenizer(br.readLine());
+        for (int i = 0; i < N; i++) {
+            lessons[i] = Integer.parseInt(st.nextToken());
+            left = Math.max(left, lessons[i]);
+            right += lessons[i];
+        }
+    }
+
+    private static void sol() throws IOException {
+        while (left <= right) {
+            int mid = left + (right - left) / 2;
+
+            if (isRecordable(mid)) {
+                ans = Math.min(ans, mid);
+                right = mid - 1;
+            } else {
+                left = mid + 1;
+            }
+        }
+
+        bw.write(ans + "");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static boolean isRecordable(int mid) {
+        int cnt = 1;
+        int sum = 0;
+
+        for (int lesson : lessons) {
+            if (sum + lesson <= mid) {
+                sum += lesson;
+            } else {
+                cnt++;
+                sum = lesson;
+            }
+        }
+
+        return cnt <= M;
+    }
+
+}
+```