include <stdio.h>

include <string.h>

int main(void)
{
char str[5000];
int count = 0;
gets(str);
int str_len = strlen(str) - 1;
for (int i = str_len; i>=0; i--)
{
if (str[i] != ' ')
count++;
else
break;
}
printf("%d\n", count);
return 0;
}