[20250605] BOJ / P5 / 비 오는 날 / 권혁준

khj20006/202506/05 BOJ P5 비 오는 날.md

@@ -0,0 +1,68 @@
+```java
+import java.util.*;
+import java.io.*;
+
+public class Main {
+
+    // IO field
+    static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    static StringTokenizer st = new StringTokenizer("");
+
+    static void nextLine() throws Exception {st = new StringTokenizer(br.readLine());}
+    static String nextToken() throws Exception {
+        while(!st.hasMoreTokens()) nextLine();
+        return st.nextToken();
+    }
+    static int nextInt() throws Exception { return Integer.parseInt(nextToken()); }
+    static long nextLong() throws Exception { return Long.parseLong(nextToken()); }
+    static double nextDouble() throws Exception { return Double.parseDouble(nextToken()); }
+    static void bwEnd() throws Exception {bw.flush();bw.close();}
+
+    // Additional field
+
+    static int N;
+    static long[] A;
+    static PriorityQueue<long[]> Q;
+
+    public static void main(String[] args) throws Exception {
+
+        ready();
+        solve();
+
+        bwEnd();
+
+    }
+
+    static void ready() throws Exception {
+
+        N = nextInt();
+        A = new long[N+1];
+        for(int i=1;i<=N;i++) A[i] = nextInt();
+        Q = new PriorityQueue<>((a,b) -> Long.compare(a[0]*a[1], b[0]*b[1]));
+
+    }
+
+    static void solve() throws Exception {
+
+        if(N == 1){
+            bw.write("0");
+            return;
+        }
+
+        long ans = 0;
+        for(int i=1;i<=N;i++){
+            ans += A[i];
+            Q.offer(new long[]{A[i], 3});
+        }
+        for(int i=2;i<N;i++){
+            long[] x = Q.poll();
+            ans += x[0]*x[1];
+            Q.offer(new long[]{x[0], x[1]+2});
+        }
+        bw.write(ans + "\n");
+
+    }
+
+}
+```