> #include "Stdio.h"
>  main()
> {
>    int i,j,number,flag,shift;
>    int prime[200];
>    int N,C,all,start,s;
>    prime[0]=1;
>    prime[1]=2;
>    number=2;
>    for(i=3;i<1001;i++)
>    {
>        flag=1;
>        for(j=1;j<=number;j++)
>        {
>             if(i%prime[j]==0)
>             {
>                flag=0;
>                break;
>             }
>        }
>        if(flag) {prime[number]=i; number++;}
>    }  
>    while(scanf("%d%d",&N,&C)==2)
>    {
>        for(i=0;i<number;i++)
>        {
>            if(N<prime[i]) break;
>        }
>        all=i;
>        if(all%2) s=2*C-1;
>        else     s=2*C;
>        start=(i-s)/2;
>        if(start<0) start=0;      
>        printf("%d %d:",N,C);
> 	   shift=0;
>        for(i=start;i<start+s;i++)
>        {
>            if((i>=number)||(prime[i]>N)) break; 
>            printf(" %d",prime[i]);
> 		   shift++;
> 		   if(shift==17) {shift=0;printf("\n\n");}
>        }
>        printf("\n\n");
>    } 
> }

• prime[200] 太小了 (0) RUNSLOWLY 2008-11-22 11:57:41