#include"bits/stdc++.h" using namespace std; int main() { int a,b,c,p,q,r; cin>>p>>q>>r>>a>>b>>c; int maa=a*p; int mia=max((a-1)*p+1,0); int mab=b*q; int mib=max((b-1)*q+1,0); int mac=c*r; int mic=max((c-1)*r+1,0); if(maamab){ cout<<-1<mac){ cout<<-1<