[20250809] / BOJ / G4 파일 합치기 3 / 이강현

Author: lkhyun

lkhyun/202508/09 BOJ G4 파일 합치기 3.md

@@ -0,0 +1,34 @@
+```java
+import java.util.*;
+import java.io.*;
+
+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 T;
+
+    public static void main(String[] args) throws Exception {
+        T = Integer.parseInt(br.readLine());
+
+        for (int t = 0; t < T; t++) {
+            PriorityQueue<Long> pq = new PriorityQueue<>();
+
+            int K = Integer.parseInt(br.readLine());
+            st = new StringTokenizer(br.readLine());
+            for (int i = 0; i < K; i++) {  
+                pq.offer(Long.parseLong(st.nextToken()));
+            }
+            long ans = 0;
+            while(pq.size() != 1){
+                long cur1 = pq.poll();
+                long cur2 = pq.poll();
+                ans += cur1+cur2;
+                pq.offer(cur1+cur2);
+            }
+            bw.write(ans+"\n");
+        }
+        bw.close();
+    }
+}
+```