#include<iostream>

 #include<stack>

 #include <time.h>

 #include <sys/timeb.h>

 #include <string>

 #include <sstream>

 using namespace std;

 //获取时间戳，精确到毫秒

 long long getTimeStamp()

 {

     timeb t;

     ftime(&t);

     return t.time *  ;//+ t.millitm;

 }

 //将时间戳转换为自定义格式

 const string m_num = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWSYZ";

 string tenToX(string& str)

 {

     long long n = getTimeStamp();

     stack<long long> s;

     while(n)

     {

         s.push(n%);

         n/=;

     }

     while(!s.empty())

     {

         //    cout<<m_num[s.top()];

         str+=m_num[s.top()];

         s.pop();

     }

     return str;

 }

 //将数字转换为4位字符串

 string transform(int num)

 {

     string res;

     stringstream ss;

     ss<<num;

     ss>>res;

     if(num<)

     {

         res=""+res;

     }

     else if(num<)

     {

         res =""+res;

     }

     else if(num<)

     {

         res=""+res;

     }

     return res;

 }

 //+时间戳转换为自定义格式+4位数自增+4位数随机数

 int main()

 {

     int increment=;

     string str="";

     for(int i=;i<;i++)

     {

         int randnum=+rand()%;

         string tmpstr;

         tenToX(tmpstr);

         if(tmpstr==str)

         {

             increment++;

         }

         else

         {

             increment=;

         }

         str=tmpstr;

         tmpstr = tmpstr + to_string(increment)+to_string((randnum));

         cout<<tmpstr<<endl;

     }

     system("pause");

     return ;

 }