import java.util.Scanner;

public class CountCalculator $\{$

public static void main$($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

char userCharacter;

int sum;

sum $=0$;

userCharacter $=$ scnr$.$next$().$charAt$(0)$;

while$($userCharacter $!=\text{'}$e$\text{'})$

sum $+=1$;

System.out.println$($sum$)$;

$\}$

$\}$