#include <stdio.h>
void unesi(char niz[], int velicina)
{
char znak = getchar();
if (znak == '\n')
znak = getchar();
int i = 0;
while (i < velicina - 1 && znak != '\n')
{
niz[i] = znak;
i++;
znak = getchar();
}
niz[i] = '\0';
}

char* rot13 (char *string)
{
char* s = string;
char* ret = string;
while (*s != '\0')
{
if(*s >= 'A' && *s <= 'Z') {
if(*s >= 'N') {
*s = *s - 13;
s++;
continue;
}
*s = *s + 13;
}
if(*s >= 'a' && *s <= 'z')
{
if(*s >= 'n') {
*s = *s - 13;
s++;
continue;
}
*s = *s + 13;
}
s++;
}
return ret;
}
int main() {
char niz[100];
unesi(niz, 100);
printf("%s", rot13(niz));
return 0;
}