Submission #346784

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
346784	2021-01-11T02:39:43 Z	updown1	Carnival (CEOI14_carnival)	Java 11	Compilation error	0 ms	0 KB

carnival

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

public class Main {

    public static void main(String[] args) throws IOException, FileNotFoundException {
        // BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(new File("carnival.in"))));
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        int N = Integer.parseInt(reader.readLine());

        int[] groups = new int[N + 1];
        groups[1] = 1;

        int groupCount = 1;
        int[] groupMainPoint = new int[N + 1];

        groupMainPoint[groupCount] = 1;

        String startQuery = "1";
        int prev = 1;

        for(int i = 2; i <= N; i++){
            startQuery += " " + String.valueOf(i);
            System.out.println(i + " " + startQuery);
            System.out.flush();

            int newGroups = Integer.parseInt(reader.readLine());
            if(newGroups != prev){
                groupCount++;
                groups[i] = groupCount;
                groupMainPoint[groupCount] = i;
            } else {
                int a = 1;
                int b = groupCount;
                while(a != b){
                    int mid = (a + b) / 2;
                    String query = "";
                    for (int j = a; j <= mid; j++){
                        query += " " + String.valueOf(groupMainPoint[j]);
                    }
                    query += " " + i;
                    System.out.println(String.valueOf(mid - a + 2) + query);
                    System.out.flush();

                    int currGroupCount = Integer.parseInt(reader.readLine());
                    if(currGroupCount == (mid - a + 2)){
                        a = mid + 1;
                    } else {
                        b = mid;
                    }
                }

                groups[i] = a;
            }

            prev = newGroups;
        }

        String ans = "0";
        for(int i = 1; i <= N; i++){
            ans += " " + groups[i];
        }
        System.out.println(ans);
        System.out.flush();
        return;
    }
}

Compilation message

carnival.java:4: error: class Main is public, should be declared in a file named Main.java
public class Main {
       ^
1 error