/* USER: u199
LANG: Java
TASK: hydrocarbons */

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.*;

public class hydrocarbons {

    static String inputFilename = "hydrocarbons.in";
    static String outputFilename = "hydrocarbons.out";

    static class Solver {
        Scanner in = new Scanner(System.in);

        double a = 0, b = 0, c = 0;

        int profit = 0;

        int n = Integer.parseInt(in.nextLine());
        double total[] = new double[n];
        double temp[] = new double[n];
        int profitable[] = new int[n];

        Map<Double, Double> pr = new HashMap<>();


        public void solve() {


            for(int i = 0; i <= n-1; i++) {
                a = in.nextDouble();
                b = in.nextDouble();
                c = in.nextDouble();

                total[i] = a-a*(b/3000) - c*a/40;
            }

            int used[][] = new int[n][n];
            for (int e = 0; e <= n-1; e++) {
                for (int x = 1; x <= n-1; x++) {
                    if ( ((total[e] - total[x]) <= 0.0000001) && ((total[e] - total[x])  >= 0 )) {
                        if ((x != e) && (used[x][e] != 1) && (used[e][x] != 1) ) {
                            total[e] = total[e] + e + x * 0.2;
                            used[e][x] = 1;
                            used[x][e] = 1;
                        }
                    }
                }
            }

            for (int i = 0; i <= n-1; i++) {
                pr.put( total[i], (double) i);
            }

            Arrays.sort(total);

            for (int z = 0; z <= n-1; z++) {
                if (total[z] > 0) {
                    temp[profit] = pr.get(total[z]);
                    profit++;
                }
            }

            for (int y = 0; y <= profit-1; y++) {
                profitable[y] = (int) Math.round(temp[y]);
            }


            if (profit == 0) {
                System.out.println("0");

            } else if (profit == 1) {

                System.out.println("1");
                System.out.println(profitable[0] + 1);
            }
            else {
                System.out.println(profit);
                for (int x = profit-1; x >= 0; x--) {
                    System.out.print(profitable[x] + 1 + " ");
                }
            }
        }

    }


    public static void main(String args[]) {

        try ( FileInputStream instream = new FileInputStream(inputFilename);
              PrintStream outstream = new PrintStream( new FileOutputStream(outputFilename) );
        )
        {
            System.setIn(instream);
            System.setOut(outstream);

            Solver solver = new Solver();
            solver.solve();

            instream.close();
            outstream.close();
        } catch (IOException ioe) {
            System.err.println("IOException: " + ioe);
        }

    }


}