#include<fstream.h>
#include<math.h>

ifstream f("date.in");
ofstream g("date.out");

struct nod{int info;
	    nod *leg;
	  };
nod *prim;

void adaugf(nod *&prim,int x)
 {nod *nou=new nod;
  nou->info=x;
  nou->leg=prim;
  prim=nou;
 }

void creare()
 {int x;
  while(f>>x) adaugf(prim,x);
 }

void afis(nod *prim)
 {nod *p=prim;
  while(p) {g<<p->info<<" ";
	    p=p->leg;
	   }
   g<<endl;
 }


void main()
 {creare();
  afis(prim);
  nod *p=prim;
  while(p)
   { if(sqrt(p->info)==floor(sqrt(p->info))) cout<<p->info<<" ";
     p=p->leg;
   }
 }