> #include<stdio.h>
> #include<string.h>
> void build(int n,char*s1,char*s2)
> {
> 	if(n<=0)return ;
> 	int p=strchr(s2,s1[0])-s2;
> 	build(p,s1+1,s2);
> 	build(n-p-1,s1+p+1,s2+p+1);
> 	printf("%c",s1[0]);
> }
> int main()
> {
> 	char s1[30],s2[30],ans[30];
> 	memset(s1,0,sizeof(s1));
> 	memset(s2,0,sizeof(s2));
> 	while(scanf("%s %s",s1,s2)!=EOF)
> 	{
> 		int n=strlen(s1);
> 		build(n,s1,s2);
> 		ans[n]='\0';
> 		printf("\n");
> 	}
> 	return 0;
> }