BOJ_2792 : 보석 상자

Author: spring0913

week5/BOJ_2792(보석 상자).java

@@ -0,0 +1,39 @@
+import java.io.*;
+import java.util.*;
+
+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[] jewel = new int[M];
+        int max = Integer.MIN_VALUE;
+        for (int i = 0; i < M; i++) {
+            jewel[i] = Integer.parseInt(br.readLine());
+            max = Math.max(max, jewel[i]);
+        }
+        Arrays.sort(jewel);
+        int answer = max;
+        int low = 1;
+        int high = max;
+        while (low <= high) {
+            int mid = (low + high) / 2;
+            int count = 0;
+            for (int j = 0; j < M; j++) {
+                count += jewel[j] / mid;
+                if (jewel[j] % mid != 0) {
+                    count++;
+                }
+            }
+            if (count > N) {
+                low = mid + 1;
+            } else {
+                answer = Math.min(answer, mid);
+                high = mid - 1;
+            }
+        }
+        System.out.println(answer);
+    }
+}