#include <algorithm>
#include <iostream>
#include <stdlib.h>
#include <string>
#include <time.h>

using namespace std;

#define N 1000000
#define MIN_LEN 20
#define MAX_LEN 50
#define MAX_CHAR 'd'

int main(void) {
  srand(time(NULL));
  string s[N];
  char buf[MAX_LEN + 1];

  // Generate some strings
  for (int i = 0; i < N; i++) {
    int len = rand() % (MAX_LEN - MIN_LEN + 1) + MIN_LEN;
    for (int j = 0; j < len; j++) {
      buf[j] = rand() % (MAX_CHAR - 'a' + 1) + 'a';
    }
    buf[len] = '\0';
    s[i] = buf;
  }

  sort(s, s + N);

  // Print them
  // for (int i = 0; i < N; i++) {
  //   cout << s[i].length() << "[" << s[i] << "]\n";
  // }
}