#include using namespace std; #define int long long signed main(){ int N,X,Y; cin>>N>>X>>Y; int sum = 0; vector A(N); for(int i=0;i>A[i]; sum += A[i]; if(i != 0) sum += A[i]; } int a = A[0]-(sum-A[0]); if((((X*X+Y*Y)%a != 0 && (X*X+Y*Y)/a <= a) || (X*X+Y*Y)/a < a) && sum-A[0] < A[0]){ cout<<"No"<= sum) || (X*X+Y*Y)/sum > sum){ cout<<"No"<