C :

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

int main()
{
	int i,k,l;
	char a[35];
	while(gets(a))
	{
		k=0;
		if(!strcmp(a,"#"))
			break;
		l=strlen(a);
		for(i=0;i<l;i++)
			if(a[i]=='1')
				k++;
		if(k%2==0)
		{
			if(a[l-1]=='e')
				a[l-1]='0';
			else
				a[l-1]='1';
		}
		else
		{
			if(a[l-1]=='e')
				a[l-1]='1';
			else
				a[l-1]='0';
		}
		printf("%s\n",a);
	}
	return 0;
}

Java :

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		while(true){
			String s = in.nextLine();
			if(s.equals("#"))break;
			char[] mai = s.substring(0, s.length()-1).toCharArray();
			char com = s.charAt(s.length()-1);
			int cou = 0;
			for(char c:mai)
				if(c=='1')cou++;
			if(cou%2==0&&com=='e' || cou%2==1&&com=='o')System.out.println(s.replace(com, '0'));
			else System.out.println(s.replace(com, '1'));
		}
	}

}