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For help!!! 那位同仁帮我检查一下这个程序为什么会超时...谢谢啊

Posted by wycasdfasdf at 2006-05-04 21:11:34 on Problem 1572
#include"stdio.h"
#include"string.h"
void main()
{
	int n,i,m,r1,r2,q,j,r,k,p1;
	char a[11][81],b[11][81],s[260],*p;
	while(1)
	{
		q=0;
		scanf("%d%*c",&n);if(n==0) break;
		for(i=0;i<n;i++)
		{gets(a[i]);gets(b[i]);}
		gets(s);
		while(1)
		{			
		    m=strlen(s);
			q=1;
			for(i=0;i<n;i++)
			{   k=0;
				p=strstr(s,a[i]);
				if(p!=NULL)
				{
					q=0;
					p1=(int)(p-s);
                                                                                r1=strlen(a[i]);
					r2=strlen(b[i]);
                                                                                r=r2-r1;					
					if(r>0)
					for(j=m+r-1;j>=p1+r2;j--)
					s[j]=s[j-r];
					else if(r<0)
					for(j=p1+r2;j<m+r;j++)
					s[j]=s[j-r];
					s[m+r]='\0';	
					for(j=p1;j<p1+r2;j++)
					s[j]=b[i][k++];
				    break;
				}				
			}	
			if(q==1)break;
		}
		puts(s);
	}
}

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