Cod sursa(job #147252)

Utilizator kojoCojocaru Aurelian kojo Data 2 martie 2008 18:42:05
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include<fstream.h>
ifstream f("ciur.in");
ofstream g("ciur.out");
int n,i,j,b[10000],k;
long long a[2000000];
int main()
{
f>>n;
for(i=2;i<=n;i++)
	{if(!a[i])
		{for(j=i*2;j<=n;j+=i)
			  a[j]=1;
		b[++k]=i;}
	}
g<<k<<'\n';
if(k>1000)
	for(i=k-999;i<=k;i++)
		g<<b[i]<<' ';
else
	for(i=1;i<=k;i++)
		g<<b[i]<<' ';
return 0;
}