[20250908] BOJ / G5 / 입국심사 / 이준희

Author: JHLEE325

JHLEE325/202509/08 BOJ G5 입국심사.md

@@ -0,0 +1,41 @@
+```java
+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[] immigration = new int[n];
+
+        for (int i = 0; i < n; i++) {
+            immigration[i] = Integer.parseInt(br.readLine());
+        }
+
+        long left = 1;
+        long right = 1000000000 * (long)m;
+        long res = 0;
+
+        while (left <= right) {
+            long mid = (left + right) / 2;
+            long people = 0;
+            for (int i = 0; i < n; i++) {
+                people += mid / immigration[i];
+                if (people >= m) break;
+            }
+            if (people >= m) {
+                res = mid;
+                right = mid - 1;
+            } else {
+                left = mid + 1;
+            }
+        }
+        System.out.println(res);
+    }
+}
+```