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Re:这是为什么啊,两个一样的,一个ac,一个WA??In Reply To:这是为什么啊,两个一样的,一个ac,一个WA?? Posted by:xtu723 at 2007-08-12 16:11:50 > sort(s,s+i-1);
> // printf("s[i-1]===%d\n",s[i-1]);
> num=0;
> for(j=1;j<i;j++)
> {
> for(k=0;k<j;k++)
> if(s[j]==s[k]*2) num++;
> }
> 上面是排序之后找,WA
> num=0;
> for(j=0;j<i;j++)
> {
> for(k=0;k<i;k++)
> if(s[j]==s[k]*2) num++;
> }
> 上面不排序直接找,AC
> 两个有什么不同?
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