#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; using pii = pair; using ll=long long; using ld=long double; #define pb push_back #define mp make_pair #define sc second #define fr first #define stpr setprecision #define cYES cout<<"YES"<=0;i--) #define rRep(i,a,b) for(ll i=a;i>=b;i--) #define crep(i) for(char i='a';i<='z';++i) #define psortsecond(A,N) sort(A,A+N,[](const pii &a, const pii &b){return a.second inline bool chmax(T& lhs, const U& rhs) { if (lhs < rhs) { lhs = rhs; return 1; } return 0; } template inline bool chmin(T& lhs, const U& rhs) { if (lhs > rhs) { lhs = rhs; return 1; } return 0; } template istream& operator>>(istream& is,vector& v){for(auto&& x:v)is >> x;return is;} template istream& operator>>(istream& is, pair& p){ is >> p.first; is >> p.second; return is;} template ostream& operator>>(ostream& os, const pair& p){ os << p.first << ' ' << p.second; return os;} template ostream& operator<<(ostream& os, vector& v){ for(auto i=begin(v); i != end(v); ++i){ if(i !=begin(v)) os << ' '; os << *i; } return os; } int main(){ ld A,B,C,D; cin >> A >> B >> C >> D; ld X=2.0,Y=A-C,Z=B-D; ld E=Y*Y-4.0*X*Z; if(E==0){ cYes; } else if(E<0){ cNo; } else{ E=sqrt(E); ld a=(-Y-E)/(2.0*X),b=(-Y+E)/(2.0*X); ld p=((b*b+A*b+B)-(a*a+A*a+B))/(b-a); ld q=a*a+A*a+B-a*p; cout << stpr(10) << p << " " << stpr(10) << q << endl; } }