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

int main()
{

	char S1[81]="\0",S2[81]="\0",t[81]="\0",*p=NULL;
	gets(S1);
	gets(S2);
	int num2=strlen(S2);
	while((p=strstr(S1,S2))!=NULL)
	{
		strcpy(t,p+num2);
		*p='\0';
		strcat(S1,t);	
	}
	printf("%s\n",S1);
	return 0;
}