#include <bits/stdc++.h>
#include "E:\\Á¤º¸¿Ã¸²ÇǾƵå\\koistudy.net\\dataMaker\\testlib.h"
#define INT long long int
#define MOD 1000000007
#define oo (INT)(6e18)
using namespace std;
bitset<4000001> dt;
int n, s;
int main(int argc, char*argv[])
{
    registerGen(argc, argv, 1);
    char s[100];
    for(int i = 1 ; i <= 50 ; i++ )
    {
        sprintf( s, ".%d.in", i);
        int n;
        freopen(s, "w", stdout);
        cin>>n;
        cout<<n<<endl;
        for(int i = 0 ; i < n ; i++ )
            cout<<rnd.next(1,2000)<<" ";
        cout<<endl;
    }
}