Cod sursa(job #944353)

Utilizator Gusti666Lucaciu Catalin Gusti666 Data 28 aprilie 2013 10:42:50
Problema Ciurul lui Eratosthenes Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.3 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
#define nmax 2000005

using namespace std;
ifstream f("ciur.in");
ofstream g("ciur.out");
int i,n,j,k;
bool v[nmax];
int main()
{f>>n;
for (i=2;i<=n;i++)
    if(v[i]==0){
    for(j=2*i;j<=n;j+=i)
    v[j]=1;
    k++;

    }

g<<k;
    return 0;
}