#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <string>
#include <vector>
#include <iostream>
#include <algorithm>
#include <numeric>
#include <queue>
#include <stack>
#include <map>
#include <set>
#include <fstream>
#include <iomanip>

#ifdef DK
const int MAX = 10;
#else
const int MAX = 1e5 + 11;
#endif

using namespace std;

int main() {
#ifdef DK
  freopen("in.txt", "r", stdin);
//  freopen("out.txt", "w", stdout);
#endif
  printf("100000\n");
  for (int i = 0; i < 100000; ++i) {
    printf("%d ", i + 1);
  }
  printf("\n");
  return 0;
}