#include<iostream>
#include<cstdio>
#define ll long long
#define inf 0x7fffffff
using namespace std;
inline ll extend_gcd(ll a,ll b,ll &x,ll &y){
if(b==0){x=1;y=0;return a;}
else{
int t=extend_gcd(b,a%b,y,x);
y-=x*(a/b);
return t;
}
}
ll x,y,m,n,l,a,b,c,t;
int main(){
scanf("%lld%lld%lld%lld%lld",&x,&y,&m,&n,&l);
a=n-m;b=l;c=x-y;
t=extend_gcd(a,b,x,y);
if(c%t!=0){printf("Impossible\n");return 0;}
a/=t;b/=t;c/=t;
x=((......
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