[BOJ] 1715 카드 정렬하기 (G4)

Author: abcxj123

정건우/10주차/260306.java

@@ -0,0 +1,37 @@
+//https://www.acmicpc.net/problem/1715
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.PriorityQueue;
+
+public class BOJ_G4_1715_카드정렬하기 {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        int N = Integer.parseInt(br.readLine());
+
+        if(N == 1) {
+            System.out.println(0);
+            return;
+        }
+
+        PriorityQueue<Integer> pq = new PriorityQueue<>();
+
+        for (int i = 0; i < N; i++) {
+            pq.add(Integer.parseInt(br.readLine()));
+        }
+
+        int ans = 0;
+
+        while (pq.size() >= 2) {
+            int a = pq.poll();
+            int b = pq.poll();
+
+            pq.add(a+b);
+            ans += a+b;
+        }
+
+        System.out.println(ans);
+
+    }
+}