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这个题目很有意思.做出不难,但要很细心.查找两个位置后要注意修正下数据~~~

Posted by level at 2007-02-01 22:11:40 on Problem 2413 
		ai=ffind(sa);
		if(cmp(sa,a[ai])>0) ai++;
		bi=ffind(sb);
		if(cmp(sb,a[bi])<0) bi--;
		cout<<bi-ai+1<<endl;
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