Cod sursa(job #857020)

Utilizator radurobert1996Radu Robert radurobert1996 Data 17 ianuarie 2013 09:53:32
Problema Ciurul lui Eratosthenes Scor 30
Compilator cpp Status done
Runda Arhiva educationala Marime 0.32 kb
Raporteaza aceasta sursa 
#include <iostream>
#include<fstream>
using namespace std;
ifstream f("ciur.in");
ofstream g("ciur.out");
using namespace std;
int i,j,n,k=1,nr,v[10000000];
int main()
{f>>n;
for(i=1;i<=n;i++)
v[i]=1;
for(i=2;i<=n;i++)
if(v[i])
{
    nr++;
    for(j=i+i;j<=n;j=j+i)
    v[j]=0;
}
  g<<nr;
  return 0;
}