#include<bits/stdc++.h>
using namespace std;
int main()
{
int a,b,c;
scanf("%d%d%d",&a,&b,&c);
int ab=a+b-c,bc=b+c-a,ac=a+c-b;
if(ab>=0&&bc>=0&&ac>=0&&ab%2==0&&bc%2==0&&ac%2==0)
printf("%d %d %d\n",ab/2,bc/2,ac/2);
else
printf("Impossible\n");
return 0;
}

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