meituan-003. 小美的跑腿代购

src/main/java/study/plan/meituan/Solution.java

@@ -3,7 +3,7 @@ package study.plan.meituan;
 import java.io.*;
 import java.util.*;
 
-public class Main {
+public class Solution {
 
     static Scanner sc;
     static PrintWriter pw;

src/main/java/study/plan/meituan/meituan003/Solution.java

@@ -0,0 +1,81 @@
+package study.plan.meituan.meituan003;
+
+import java.io.*;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.StringTokenizer;
+
+public class Solution {
+
+    static Scanner sc;
+    static PrintWriter pw;
+
+    public static void main(String[] args) throws IOException {
+        sc = new Scanner(System.in);
+        pw = new PrintWriter(System.out);
+        solve();
+        pw.close();
+    }
+
+    public static void solve() throws IOException {
+        int sum = Integer.parseInt(sc.next());
+        int num = Integer.parseInt(sc.next());
+        int[][] arrs = new int[sum][2];
+        for (int i = 0; i < sum; i++) {
+            arrs[i][0] = i + 1;
+            int v = Integer.parseInt(sc.next());
+            int w = Integer.parseInt(sc.next());
+            arrs[i][1] = v + 2 * w;
+        }
+        Arrays.sort(arrs, (o1, o2) -> o1[1] == o2[1] ? o2[0] - o1[0] : o1[1] - o2[1]);
+        int[] result = new int[num];
+        for (int i = 1; i <= num; i++) {
+            result[i - 1] = arrs[sum - i][0];
+        }
+        Arrays.sort(result);
+        for (int i = 0; i < num; i++) {
+            pw.print(result[i] + " ");
+        }
+    }
+
+
+    static class Scanner {
+        BufferedReader br;
+        StringTokenizer st;
+
+        public Scanner(InputStream s) {
+            br = new BufferedReader(new InputStreamReader(s));
+        }
+
+        public Scanner(FileReader f) {
+            br = new BufferedReader(f);
+        }
+
+        public String next() throws IOException {
+            while (st == null || !st.hasMoreTokens())
+                st = new StringTokenizer(br.readLine());
+            return st.nextToken();
+        }
+
+        public int nextInt() throws IOException {
+            return Integer.parseInt(next());
+        }
+
+        public long nextLong() throws IOException {
+            return Long.parseLong(next());
+        }
+
+        public double nextDouble() throws IOException {
+            return Double.parseDouble(next());
+        }
+
+        public int[] nextIntArr(int n) throws IOException {
+            int[] arr = new int[n];
+            for (int i = 0; i < n; i++) {
+                arr[i] = Integer.parseInt(next());
+            }
+            return arr;
+        }
+
+    }
+}