Cod sursa(job #1963071)

Utilizator Horea_Mihai_SilaghiHorea Mihai Silaghi Horea_Mihai_Silaghi Data 12 aprilie 2017 11:43:35
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.26 kb
Raporteaza aceasta sursa 
#include <iostream>

using namespace std;
int v[2000000]={0},n,i,j,c=0;
int main()
{
    cin>>n;
    for(i=2;i<=n;i++)
    {
        if(v[i]==0)
            c++;
        for(j=1;j*i<=n;j++)
            v[i*j]++;
    }
    cout<<c;
    return 0;
}