import lombok.Data;
import lombok.experimental.Accessors;

@Data
@Accessors(fluent = true)
public class Person {
    private String name;
    private boolean isWorked;
}

import java.util.List;

public class Main {
    private static List<Person> personList;

    public static void main(String[] args) {

        for (int i = 0; i < 1000; i++) {
            personList.add(new Person());
        }

        for (int x = 0; x < personList.size(); x++) {
            if (!personList.get(x).isWorked()) {
                for (int i = x; i < x + 100; i++) {
                    personList.get(i).isWorked(true);
                }

            }
        }
    }
}