結果
| 問題 | No.2710 How many more? | 
| コンテスト | |
| ユーザー |  tenten | 
| 提出日時 | 2024-04-01 17:27:27 | 
| 言語 | Java (openjdk 23) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 763 ms / 2,000 ms | 
| コード長 | 2,069 bytes | 
| コンパイル時間 | 2,221 ms | 
| コンパイル使用メモリ | 79,600 KB | 
| 実行使用メモリ | 59,792 KB | 
| 最終ジャッジ日時 | 2024-09-30 21:54:47 | 
| 合計ジャッジ時間 | 12,713 ms | 
| ジャッジサーバーID (参考情報) | judge5 / judge1 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 2 | 
| other | AC * 17 | 
ソースコード
import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;
public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int q = sc.nextInt();
        int[] points = new int[n];
        TreeMap<Integer, Integer> counts = new TreeMap<>();
        for (int i = 0; i < n; i++) {
            points[i] = sc.nextInt();
            counts.put(points[i], counts.getOrDefault(points[i], 0) + 1);
        }
        int current = 0;
        for (int x : counts.keySet()) {
            current += counts.get(x);
            counts.put(x, current);
        }
        counts.put(0, 0);
        int[] lefts = new int[n];
        int[] rights = new int[n];
        for (int i = 0; i < n; i++) {
            lefts[i] = counts.lowerEntry(points[i]).getValue();
            rights[i] = counts.get(points[i]);
        }
        StringBuilder sb = new StringBuilder();
        while (q-- > 0) {
            int base = sc.nextInt() - 1;
            int target = sc.nextInt() - 1;
            sb.append(Math.max(0, lefts[base] - rights[target])).append("\n");
        }
        System.out.print(sb);
    }
}
class Scanner {
    BufferedReader br;
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
        } catch (Exception e) {
            
        }
    }
    
    public int nextInt() {
        return Integer.parseInt(next());
    }
    
    public long nextLong() {
        return Long.parseLong(next());
    }
    
    public double nextDouble() {
        return Double.parseDouble(next());
    }
    
    public String next() {
        try {
            while (!st.hasMoreTokens()) {
                st = new StringTokenizer(br.readLine());
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            return st.nextToken();
        }
    }
    
}
            
            
            
        