#include <bits/stdc++.h> using namespace std; int a[3000001]; int main() { for (int i = 2;i <= 3000000;i++){ if (a[i] == 1){ continue; } for (int j = 2 * i;j <= 3000000;j+=i){ a[j] = 1; } if (i * i > 3000000){ break; } } for (int i = 2;i <= 3000000;i++){ if (a[i] == 0){ cout<<i<<" "; } } return 0; }