Process exited after 3.453 seconds with return value 3221225477

#include<bits/stdc++.h>
using namespace std;
int main(){

	int a;bool b[100000];	long long int c,d,e=0;
	cin>>a;
	for(int i=1;;i++){
	c=pow(i,2);
	if(c>a)
	d=i;
	break;
	}
	if(a%2==1){
		cout<<0-1;
	}else{
		while(a>0){
			if(a%2==0){
				b[e]=false;
			}else{
				b[e]=true;
			}
			floor(a*1.0/2);
			e++;
		}
		for(int i=d;i>=1;i--){
			if(b[i]==true){
				cout<<pow(i,2)<<" ";
			}
		}
}
	return 0;
}