include <stdio.h>

include <string.h>

int main()
{
char str[5000];
fgets(str,5000, stdin);
int count = 0;
int len = strlen(str);
for(int i = len-2; i>=0 ;i--)
{
if (str[i] != ' ')
{
count ++;
}
else
{
break;
}
}
printf("%d\n",count);
return 0;
}