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

int main()
{
int length = 0;
int count = 0;
char String[1000002] = {0,};
fgets(String, sizeof(String), stdin);
length = strlen(String);
for (int i = 0; i < length; i++)
{
if (String[i] == 32 && String[i + 1] != 32)
count++;
}
if (String[0] != 32)
count++;
if (String[length-2] == 32)
count--;
printf("%d", count);
return 0;
}