#include<stdio.h>

int main() {
  char rot;
  scanf("%c", &rot);                    /* 1 */
  while (rot >= 'a' && rot <= 'z') {
    if ('a' <= rot && rot <= 'm')
      rot = rot+13;
    else if('n'<= rot && rot<='z')
      rot = rot-13;
    printf("%c\n", rot);                /* 2 */
    scanf("%c", &rot);                  /* 3 */
  }
  return 0;
}
/* end */