#include<stdio.h>
int main()
{
char string[81];
int i;
int num = 0;
int word = 0;
char c;
gets(string);
for(i = 0;(c=string[i]) != '\0';i++)
{
if(c ==' ')
{
word = 0;
}
else if(word == 0)
{
word = 1;
num ++;
}
}
printf("%d\n",num);
return 0;
}