#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <locale.h>

int main()
{
  int tamanho = 0, repeat, inverte = 265; wchar_t word[266], contrario[266];
  //printf("%s", setlocale(LC_ALL,"Portuguese"));
  wscanf(L"%ls", (word));
  //printf("~%d %d ~~ %d\n", (int) palavra[0], (int) palavra[4], (int) strlen(palavra));
  for (repeat = 0; repeat < 266 / 2; repeat ++)
  {
    /*if (word[repeat] == 'é' || word[repeat] == 'É')
    {
      word[repeat] = 'e';
    }
    if (word[repeat] ==)*/
    if (word[repeat] != word[265 - repeat])
    //if (strcmp(contrario, word) != 0)
    {
      printf("NAO\n");
      return(0);
    }
    else
    {
      tamanho ++;
    }
  }
  printf("SIM\n%d\n", tamanho);
}