Cod sursa(job #2084557)

Utilizator RusaRusa Catalin Rusa Data 9 decembrie 2017 10:46:34
Problema Ciurul lui Eratosthenes Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.44 kb
#include <iostream>
#include <math.h>
#include <fstream>
using namespace std;
ifstream fin("ciur.in");
ofstream fout("ciur.out");
bool a[2000001];
int main()
{
    int n;
    fin>>n;

    for(int i=2;i<=n;i++){
       if(a[i]==0){
        for(int j=2*i;j<=n;j+=i){
            a[j]=1;
        }
       }

        }
    for(int i=2;i<=n;i++){
        if(a[i]==0){
            fout<<i<<" ";

        }
    }

    return 0;
}