///////////// start code /////////////
#include<iostre am>
#include<iomani p>
using namespace std;
int ReadSquareSize( )
{
int x;
cout<<"Plhktrol oghse to mege8os tou pinaka, akeraios 8etikos perittos apo 3 kai panw: ";
while(1)
{
cin>>x;
if(x>=3 && x%2==1)
{
return x;
}
...