#include <stdio.h>
#include <string.h>
#include <ctype.h>
#define maxLength 256

void reverse (char *s)
{
	char tmp;
	int i;
	int n = strlen(s);
	for (i=0; i<n/2; i++)
	{
		tmp = s[i];
		s[i] = s[n-i-1];
		s[n-i-1] = tmp;
	}
}

void strg (char *s)
{
	int n = strlen(s),i;
	char *c = s;
	for (i=0; i<n; i++)
		if (i!=n/2)
			*c++ = s[i];
	*c = '\0';
}

int main()
{
	FILE *file;
	char str[maxLength],last[maxLength/2+1]="",tmp[maxLength/2+1];
	char *c,*result;
	int length,i,j,left,k;
	file = fopen ("text.txt","r");
	result = fgets(str,maxLength,file);
	length = strlen(str);
	i = 0;
	for (c=str+length-1; isalpha(*c); c--)
		last[i++]=*c;
	last[i]='\0';
	reverse (last);
	i = 0;
	while (i<length)
	{
		if (isalpha(str[i]))
		{
			strcpy (tmp,"");
			j = 0;
			left = i;
			while (i<length && isalpha(str[i]))
			{
				tmp[j++] = str[i];
				i++;
			}
			tmp[j] = '\0';
			if (strlen(tmp)%2 && strcmp(tmp,last)!=0)
			{
				strg (tmp);
				k = 0;
				for (j=left; j<left+strlen(tmp); j++)
					str[j] = tmp[k++];
				for (j=j; j<length-1; j++)
					str[j] = str[j+1];
				str[length-1] = '\0';
				length = strlen(str);
			}
		}
		else ++i;
	}
	printf ("%s\n",str);
	fclose (file);
	return 0;
}