#include using namespace std; using ll=long long; using vin=vector; using vll=vector; using vvin=vector>; using vvll=vector>; using vstr=vector; using vvstr=vector>; using vch=vector; using vvch=vector>; using vbo=vector; using vvbo=vector>; using vpii=vector>; using pqsin=priority_queue,greater>; #define mp make_pair #define rep(i,n) for(int i=0;i<(int)(n);i++) #define rep2(i,s,n) for(int i=(s);i<(int)(n);i++) #define all(v) v.begin(),v.end() #define decp(n) cout<> matrixpro(vector>& a,vector>& b){ ll as=a.size();ll bs=b[0].size(); vector> c(as,vector(bs)); rep(i,as)rep(k,b.size())rep(j,bs)c[i][j]+=a[i][k]*b[k][j]; return c; } int main(){ decp(10); double a,b,c,d,e,f;cin>>a>>b>>c>>d>>e>>f; vector> p(2,vector(1)); p[0][0]=c; p[1][0]=f; vector> q(2,vector(2)); q[0][0]=e;q[0][1]=-b; q[1][0]=-d;q[1][1]=a; auto ans=matrixpro(q,p); double g=a*e-b*d; cout<