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Re:疯了疯了，怎么总是RE！In Reply To:疯了疯了，怎么总是RE！ Posted by:Manio at 2006-09-19 11:56:09 > #include <iostream>
> using namespace std;
> #define RSIZE 50000000
> #define ASIZE 5000000
> int main()
> {
> bool rec[RSIZE];
> long a[ASIZE];
> long i;
> for (i=0;i<RSIZE;i++)
> rec[i]=false;
> for (i=0;i<ASIZE;i++)
> a[i]=0;
> a[0]=0;
> for (i=1;i<ASIZE;i++)
> {
> a[i]=a[i-1]-i;
> if(a[i]<=0 || rec[a[i]]==true)
> a[i]=a[i-1]+i;
> rec[a[i]]=true;
> }
> long n;
> while(cin>>n)
> {
> if(n==-1)return 0;
> cout<<a[n]<<endl;
> }
> return 0;
>
> }
>
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