include[HTML_REMOVED]
using namespace std;
const int N=1e3+10;
int n,m;
int f[N][N];
int main()
{
int n,k;
while(cin>>n>>k)
{
int ans=-1;
double sum=n,tmp=200;
for(int i=1;i<=21;i++)
{
if(sum>=tmp)
{
ans=i;
break;
}
sum+=n;
tmp=(1+k1.0/100);
}
if(ans!=-1)
{
cout<<ans<<endl;
}
else
{
cout<<”Impossible”<<endl;
}
}
}