>>555
# include <stdio.h>
# include <string.h>
# include <ctype.h>

int vowel(char c)
{
  switch(tolower(c))
  {
  case 'a':
  case 'e':
  case 'i':
  case 'o':
  case 'u':
    return 1;
  default:
    return 0;
  }
}

int main(void)
{
  char input[0x100];
  int i, n;
  fgets(input, 0x100, stdin);
  n = 0;
  for(i = 0; input[i]; i++)
    if(vowel(input[i]))
      n++;
  printf("%d\n", n);
  return 0;
}