2019独角兽企业重金招聘Python工程师标准>>> 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class CF190A {
public static void main(String[] args) throws IOException {
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String[] nm = in.readLine().split(" ");
int n = Integer.parseInt(nm[0]);
int m = Integer.parseInt(nm[1]);
if (n == 0 && m == 0) {
System.out.println(0 + " " + 0);
return;
}
if (n == 0) {
System.out.println("Impossible");
return;
}
if (m == 0) {
System.out.println(n + " " + n);
return;
}
int min = 0;
if (n > m) {
int tn = n;
for (int i = 0; i < m; i++) {
min += 1;
tn -= 1;
}
min += tn;
} else {
min = m;
}
int max = n - 1 + m;
System.out.println(min + " " + max);
}
}