A3 in LOSH 2016

#include <iostream>
#include <string>
int n;
int  pp[10000000];
int num = 0;
using namespace std;
int main() {
    cin >> n;
    for (int i = 2; i < n+1; i++) {
        if (pp[i]==0) {
            for (int j = 2*i; j < n+1; j+=i) {
                pp[j]+=1;
            }
        }
    }

    for (int i = 0; i < 10000000; i++){
        if (pp[i]>2){
            cout <<i <<" ";
        }
    }
}