#include <bits/stdc++.h>
using namespace std;
const int MAX = 2e5 + 5;
const long int mod = 1e9 + 7;
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
template <typename T, typename V>
void __print(const pair<T, V> &x) {
  cerr << '{';
  __print(x.first);
  cerr << ',';
  __print(x.second);
  cerr << '}';
}
template <typename T>
void __print(const T &x) {
  int f = 0;
  cerr << '{';
  for (auto &i : x) cerr << (f++ ? "," : ""), __print(i);
  cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V>
void _print(T t, V... v) {
  __print(t);
  if (sizeof...(v)) cerr << ", ";
  _print(v...);
}
int main() {
  int n, m;
  cin >> n >> m;
  int minAmount = 0, maxAmount = 0;
  if (n == 0 and m == 0) {
    cout << 0 << " " << 0 << "\n";
    return 0;
  }
  if (n == 0 and m > 0) {
    cout << "Impossible"
         << "\n";
    return 0;
  }
  if (n == 1 and m == 0) {
    cout << 1 << " " << 1 << "\n";
    return 0;
  }
  if (n == 1 and m > 0) {
    minAmount = maxAmount = m;
  } else if (n > 0 and m == 0) {
    minAmount = maxAmount = n;
  } else if (m < n) {
    minAmount = n;
    maxAmount = n + (m - 1);
  } else {
    minAmount = n + (m - n);
    maxAmount = n + (m - 1);
  }
  cout << minAmount << " " << maxAmount << "\n";
}
