import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.InputMismatchException;
import java.util.StringTokenizer;
public class Main {
public interface SpaceCharFilter {
public boolean isSpaceChar(int ch);
}
class InputReader {
private byte[] buf = new byte[1024];
private int curChar;
private int numChars;
private SpaceCharFilter filter;
this.stream = stream;
}
public int read() {
if (numChars == -1)
throw new InputMismatchException();
if (curChar >= numChars) {
curChar = 0;
try {
numChars = stream.read(buf);
throw new InputMismatchException();
}
if (numChars <= 0)
return -1;
}
return buf[curChar++];
}
public int readInt() {
int c = read();
while (isSpaceChar(c))
c = read();
int sgn = 1;
if (c == '-') {
sgn = -1;
c = read();
}
int res = 0;
do {
if (c < '0' || c > '9')
throw new InputMismatchException();
res *= 10;
res += c - '0';
c = read();
} while (!isSpaceChar(c));
return res * sgn;
}
public long readLong() {
int c = read();
while (isSpaceChar(c))
c = read();
int sgn = 1;
if (c == '-') {
sgn = -1;
c = read();
}
long res = 0;
do {
if (c < '0' || c > '9')
throw new InputMismatchException();
res *= 10;
res += c - '0';
c = read();
} while (!isSpaceChar(c));
return res * sgn;
}
int c = read();
while (isSpaceChar(c))
c = read();
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isSpaceChar(c));
return res.toString();
}
public boolean isSpaceChar(int c) {
if (filter != null)
return filter.isSpaceChar(c);
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
return readString();
}
}
class OutputWriter {
}
public OutputWriter
(Writer writer
) { }
public void print
(Object...
objects) { for (int i = 0; i < objects.length; i++) {
if (i != 0)
writer.print(' ');
writer.print(objects[i]);
}
}
public void printLine
(Object...
objects) { print(objects);
writer.println();
}
public void close() {
writer.close();
}
public void flush() {
writer.flush();
}
}
/**
* @param args
*/
InputReader in
= new InputReader
(System.
in); OutputWriter out
= new OutputWriter
(System.
out); {
new Main().run();
}
{
solve();
out.flush();
tok=null;
}
public void printBinary(long x){
int len=str.length();
for (int k=len-2;k>=0;k--){
if (str.charAt(k)=='1'){
out.print(len-1-k+" ");
}
}
out.printLine();
}
long[] dp=new long[1000*60+1];
int[] V=new int[60];
dp[0]=1;
int N,Q;
N=in.readInt();
Q=in.readInt();
while (N+Q>0){
int mSum=0;
for (int i=0;i<N;++i) {
V[i]=in.readInt();
mSum+=V[i];
}
for (int i=0;i<=mSum;++i) dp[i]=0;
dp[0]=1;
for (int i=0;i<N;++i){
for (int a=mSum;a>=V[i];a--){
dp[a]|=((dp[a-V[i]])<<1);
}
}
for (int q=0;q<Q;++q){
int qi=in.readInt();
if (qi>mSum) {
out.printLine("That's impossible!");
}else{
if (dp[qi]==0){
out.printLine("That's impossible!");
}else{
printBinary(dp[qi]);
}}
}
N=in.readInt();
Q=in.readInt();
}
}
}