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#include<stdio.h>
main()
{char str1[50],str2[25];
	int i,j,k;
	int count1=0;
	scanf("%s",str1);
	scanf("%s",str2);
	char *p1;
	char *p2;
	p1=str1;
	p2=str2;
	k=0;
	int d=0;
	for(i=0;*(p1+i)!='\0';i++)
	{count1++;}
	for(i=0;i<count1;i++)
	{if (*(p1+i)==*(p2+i)){k++;}}
	if (k==count1)	
	{printf("\n\n%s\n",str1);}
	else

	{for(j=count1;*(p2+d)!='\0';j++,d++)
		{*(p1+j)=*(p2+d);}
		printf("\n\n%s\n",str1);
	}

}