bureau.java

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

public class bureau
{
    private static Reader in;
    private static PrintWriter out;
    
    public static void main (String [] args) throws IOException {
        in = new Reader ();
        out = new PrintWriter (System.out, true);
        
        int t = in.nextInt ();
        while (t-- > 0) {
            int N = in.nextInt ();
            int [] par = new int [N];
            for (int i = 0; i < N; i++) {
                String s = in.nextString ();
                if (s.equals ("declare")) par [i] = -1;
                else                      par [i] = in.nextInt () - 1;
            }
            Stack <Integer> st = new Stack <Integer> ();
            boolean [] vis = new boolean [N];
            for (int i = N - 1; i >= 0; i--) {
                if (vis [i]) continue;
                vis [i] = true;
                if (par [i] != -1) vis [par [i]] = true;
                st.push (i);
            }
            
            out.println (st.size ());
            out.print (st.pop () + 1);
            while (st.size () > 0) out.print (" " + (st.pop () + 1));
            out.println ();
        }
        out.close ();
        System.exit (0);
    }
}

/** Faster input **/
class Reader {
    final private int BUFFER_SIZE = 1 << 16;private DataInputStream din;private byte[] buffer;private int bufferPointer, bytesRead;
    public Reader(){din=new DataInputStream(System.in);buffer=new byte[BUFFER_SIZE];bufferPointer=bytesRead=0;}
    public Reader(String file_name)throws IOException{din=new DataInputStream(new FileInputStream(file_name));buffer=new byte[BUFFER_SIZE];bufferPointer=bytesRead=0;}
    public String readLine()throws IOException{byte[] buf=new byte[1024];int cnt=0,c;
        while((c=read())!=-1){if(c=='\n')break;buf[cnt++]=(byte)c;}return new String(buf,0,cnt);}
    public String nextString()throws IOException{byte[]buf=new byte[1024];int cnt=0,c;
        while((c=read())!=-1){if(c<=' ')break;buf[cnt++]=(byte)c;}return new String(buf,0,cnt);}
    public int nextInt()throws IOException{int ret=0;byte c=read();while(c<=' ')c=read();boolean neg=(c=='-');
        if(neg)c=read();do{ret=ret*10+c-'0';}while((c=read())>='0'&&c<='9');if(neg)return -ret;return ret;} 
    public long nextLong()throws IOException{long ret=0;byte c=read();while(c<=' ')c=read();boolean neg=(c=='-');
        if(neg)c=read();do{ret=ret*10+c-'0';}while((c=read())>='0'&&c<='9');if(neg)return -ret;return ret;}
    public double nextDouble()throws IOException{double ret=0,div=1;byte c=read();while(c<=' ')c=read();boolean neg=(c=='-');if(neg)c = read();do {ret=ret*10+c-'0';}while((c=read())>='0'&&c<='9');
        if(c=='.')while((c=read())>='0'&&c<='9')ret+=(c-'0')/(div*=10);if(neg)return -ret;return ret;}
    private void fillBuffer()throws IOException{bytesRead=din.read(buffer,bufferPointer=0,BUFFER_SIZE);if(bytesRead==-1)buffer[0]=-1;}
    private byte read()throws IOException{if(bufferPointer==bytesRead)fillBuffer();return buffer[bufferPointer++];}
    public void close()throws IOException{if(din==null) return;din.close();}
}