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import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class MainClass {
public static void main(String[] args) {
try {
copy(System.in, System.out);
} catch (IOException ex) {
System.err.println(ex);
}
}
public static void copy(InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
while (true) {
int bytesRead = in.read(buffer);
if (bytesRead == -1)
break;
out.write(buffer, 0, bytesRead);
}
}
}
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