#include<iostream>
using
namespace
std;
int
main()
{
char
c1,c2;
c1=
'a'
;
c2=
'A'
cout<<c1<<
" "
<<c2<<endl;c1=c1-32;
c1=c1-32 ;
c2=c2-+32;
<<c2<<endl;
return
0;
}