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wa得不行了~~~~~~~~~~~~~~~~~WHO CAN TELL ME WHY!~

Posted by zwf at 2005-10-04 16:46:08 on Problem 2629
#include "stdio.h"
#include "string.h"
int main()
{
	char a[10000],b[10000];
	int i,flag1[26],flag2[26];
L1:	while (gets(a))
	{	
		if (a[0]=='\0') goto L1;
L2:		gets(b);
		if (b[0]=='\0') goto L2;
		memset(flag1,0,sizeof(flag1));
		memset(flag2,0,sizeof(flag2));
		for (i=0;i<strlen(a);i++)
			flag1[a[i]-97]=1;
		for (i=0;i<strlen(b);i++)
			flag2[b[i]-97]=1;
		for (i=0;i<26;i++)
			if (flag1[i]&&flag2[i]) printf("%c",i+97);
		printf("\n");
	}
	return 0;
}

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