Codeforces Round #224 (Div. 2) A Ksenia and Pan Scales

// Codeforces Round #224 (Div. 2) A Ksenia and Pan Scales
import java.io.*;
import java.math.*;
import java.util.*;

//Codeforces
public class MainCodeforces1 {
private static MyScanner in;
private static PrintStream out;
private static boolean LOCAL_TEST = false;

private static void solve() throws IOException
{
char[] s1 = in.nextLine().toCharArray();
char[] s2 = in.nextLine().toCharArray();
int nLeft = 0;
int nRight = -1;
for (int i = 0; i < s1.length; i++) {
if (s1[i] == '|')
nRight = 0;
else {
if (nRight >= 0)
nRight++;
else
nLeft++;
}
}
int larger = Math.max(nLeft, nRight);
int total = nLeft + nRight + s2.length;
if (total % 2 == 1)
out.println("Impossible");
else {
String res = "";
if (larger > total / 2)
out.println("Impossible");
else {
if (nLeft < total / 2) {
res += new String(s2).substring(0, total / 2 - nLeft);
}
res += new String(s1);
if (nRight < total / 2) {
res += new String(s2).substring(total / 2 - nLeft);
}
out.println(res);
}

}
}

public static void main(String[] args) throws IOException {
// helpers for input/output
out = System.out;
try {
String cname = System.getenv("COMPUTERNAME");
if (!cname.equals(""))
LOCAL_TEST = true;
} catch (Exception e) {
}
if (LOCAL_TEST) {
in = new MyScanner("E:\\zin.txt");
}
else {
boolean usingFileForIO = false;
if (usingFileForIO) {
// using input.txt and output.txt as I/O
in = new MyScanner("input.txt");
out = new PrintStream("output.txt");
}
else {
in = new MyScanner();
out = System.out;
}
}

solve();
}

// =====================================
static class MyScanner {
BufferedReader bufReader;
StringTokenizer strTok;

public MyScanner() throws IOException
{
bufReader = new BufferedReader(new InputStreamReader(System.in));
strTok = new StringTokenizer("");
}

public MyScanner(String inputFile) throws IOException {
bufReader = new BufferedReader(new InputStreamReader(new FileInputStream(
inputFile)));
strTok = new StringTokenizer("");
}

String GetNextToken() throws IOException {
if (!strTok.hasMoreTokens())
strTok = new StringTokenizer(bufReader.readLine());
return strTok.nextToken();
}

public int nextInt() throws IOException {
return Integer.valueOf(GetNextToken());
}

public long nextLong() throws IOException {
return Long.valueOf(GetNextToken());
}

public double nextDouble() throws IOException {
return Double.valueOf(GetNextToken());
}

public String nextString() throws IOException {
return GetNextToken();
}

public String nextLine() throws IOException {
return bufReader.readLine();
}

public int countTokens() {
return strTok.countTokens();
}

public boolean hasMoreTokens() {
return strTok.hasMoreTokens();
}
}

}