#include<stdio.h>
int main()
{
 char c;
 scanf("%c",&c);
 if(c>=‘a‘&&c<=‘z‘)
 {
  c=c-32;
  printf("%c\n",c);
 }
 else if(c>=‘A‘&&c<=‘Z‘)
 {
  c=c+32;
  printf("%c\n",c);
 }
 else if(c>=0&&c<=9)
 {
  c=c;
  printf("%c\n",c);
 }
 else if(c==‘ ‘)
 {
  printf("space\n");
 }
 else
 {
  printf("other\n");
 }
 return 0;
}