#include <stdio.h>

int main() 
{
char str;
int result = 0, count = 1;

str = getchar();

while(str != EOF)
{
if(str != ' ' && count == 1)
{
result++;
count = 0;
}
else if(str == ' ') count = 1;

str = getchar();
}

printf("%d", result);
}