> #include <iostream>
> using namespace std;
> int main()
> {
> 	unsigned long maxTimes=1000000;
> 	int x,y,m,n,l;
> 	cin>>x>>y>>m>>n>>l;
> 	unsigned long times;
> 	for (times=0;times<maxTimes;times++)
> 	{
> 		if ( (x+m*times)%l == (y+n*times)%l )
> 		{
> 			cout<<times<<endl;
> 			break;
> 		}
> 	}
> 	if (times==maxTimes)
> 			cout<<"Impossible"<<endl;
> 	return 0;
> }
>