#define put(now) if(now > 0 && now < N && floor(now) == now){list[(int)now] = (int)now; } int search(double x[4],int N){ int *list = new int[N]; fill(list, list+N, 0); int ans = 0, a=0; for(int i=0;i<4;i++) for(int j=0;j<4;j++) for(int k=0…