/*   @JUDGE_ID:   1705PZ   494   C */
#include <stdio.h>
#include <ctype.h>

int main()
{
	int i,count;
	char string[1024];
	char *p;

	while(fgets(string,1023,stdin))
	{
		count = 0;

		for(i = 0;string[i];i++)
			if(isalpha(string[i]) && !isalpha(string[i+1]))
				count++;

		printf("%d\n",count);
	}
	return 0;
}
@END_OF_SOURCE_CODE