#include <bits/stdc++.h>   using namespace std;   int main() {     int t, n, i, j, k, tmp;     int a, b, c;     cin >> a >> b >> c;     int p;     if ((c - b + a) % 2 != 0) {       printf( Impossible n );       return 0;     }     p = (c - b + a) / 2;     int count1 = 0;     if (p == 0) {       count1++;     }     if (a - p == 0) {       count1++;     }     if (b - (a - p) == 0) {       count1++;     }     if (p >= 0 && a - p >= 0 && b - (a - p) >= 0 && count1 <= 1) {       cout << a - p <<     << b - (a - p) <<     << p << endl;     } else {       printf( Impossible n );     }   }   