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Re:请玩POJ的高手看看,我的代码为什么TLE,而且感觉这个题有点问题啊In Reply To:请玩POJ的高手看看,我的代码为什么TLE,而且感觉这个题有点问题啊 Posted by:num9332 at 2010-08-21 15:26:14 > 有人说不可能出现猜想错误的情况,但是题目是说任意一个大于6的数都能分解成两个奇质数,15怎么分解成两个奇质数?那么猜想不就错误了?还有人贴AC的代码,我拿去验证后发现他的程序把15分解成3和12,感觉很奇怪。请大家看看我的代码是什么问题,谢谢了!
> #include <stdio.h>
> #include <math.h>
> int prime[1000001];
> int main()
> {
> int i,j,k,m,b;
> for(i=2;i<1000001;i++)
> {
> k=sqrt(i);
> for(j=2;j<=k;j++)
> {
> if(i%j==0)
> break;
> }
> if(j>k)
> prime[i]=1;
> else
> prime[i]=0;
> }
> while(1)
> {
> scanf("%d",&m);
> if(m==0)
> break;
> for(i=3;i<=m/2;i++)
> {
> b=m-i;
> if(prime[i]==1&&prime[b]==1)
> {
> printf("%d=%d+%d\n",m,i,b);
> break;
>
> }
> }
> if(i>m/2)
> {
> printf("Goldbach's conjecture is wrong.\n");
> }
> }
> return 0;
> }
坐等高手解答!
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