Cod sursa(job #1490939)

Utilizator AditzuGrigoruta Adrian Aditzu Data 24 septembrie 2015 15:05:30
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.22 kb
Raporteaza aceasta sursa 
#include <iostream>

using namespace std;
char v[2000001];
int main()
{int n,i,j,c=0;
    cin>>n;
    for(i=2;i<=n;i++)if (v[i]==0){
           c++;
         for(j=i;j<=n;j+=i)v[j]=1;
    }
    cout<<c;
}