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

int main()
{
  int c, sum = 0;
  char *s = ".,! ";

  while ((c = getc(stdin)) >= 32)
    if ('a' <= c && c <= 'z')
      sum += (c - 'a') % 3 + 1;
    else
      sum += (strchr(s, c) - s) % 3 + 1;
  printf("%d\n", sum);
  return 0;
}