// File: set2.cpp
//
// Simple use of STL set container class
//

#include <stdlib.h>
#include <iostream>
#include <set>
using namespace std ;

const unsigned long int seed = 38913154 ;
//const int reps = 10000 ;     // ten thousand
//const int reps = 20000 ;     // twenty thousand
//const int reps = 200000 ;   // two *hundred* thousand
const int reps = 400000 ;   // four *hundred* thousand

int main() {
   set<int> S ;
   int x, found = 0 ;

   srandom(seed) ;

   for (int i = 0 ; i < reps ; i++) {
      S.insert(random()) ;
   }

   for (int i = 0 ; i < reps ; i++) {
      x = random() ;
      if (S.find(x) != S.end()) found++ ;
   }

   cout << "Number of random numbers found: " << found << "\n" ;
}