题解 | #简单错误记录#

import java.util.*;
import java.io.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        LinkedHashMap<String, Integer> lru = new LinkedHashMap<String, Integer>();
        String line = null;
        while ((line = br.readLine()) != null) {
            int idx1 = line.lastIndexOf("\\");
            int idx2 = line.lastIndexOf(" ");
            String key = idx2-idx1 > 16 ? line.substring(idx2 - 16) : line.substring(idx1 + 1);
            lru.merge(key, 1, Integer::sum);
        }
        int count = 0;
        for (String key : lru.keySet()) {
            if (lru.size() - count <= 8)
                System.out.printf("%s %d%n", key, lru.get(key));
            ++count;
        }
        lru.clear();
        br.close();
    }
}