Cod sursa(job #165720)

Utilizator adrian69adrian horia adrian69 Data 26 martie 2008 17:56:39
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include<stdio.h>
int main()
{freopen("ciur.in","r",stdin);
 freopen("ciur.out","w",stdout);
 long n,i;
 long b[1500];

 scanf("%D",n);

 int max=1,j;
 b[0]=2;
 int ok;
 for(i=3;i<n+1;i++)
   {ok=0;
    for(j=0;j<max;j++)
        if(i%b[j]==0)
          ok=1;
    if(ok==0)
      b[max++]=i;
   }
 printf("%d",max);
 return 0;
}