URAL1083[Factorials!!!]

水题,不说。


CODE:


/*


PROGRAM: $PROGRAM


AUTHOR: Su Jiao


DATE: 2010-4-11


DESCRIPTION:


$DESCRIPTION


*/


#include <iostream>


using std::cin;


using std::cout;


#include <fstream>


using std::ifstream;


using std::ofstream;


#include <sstream>


using std::stringstream;


using std::endl;


#include <vector>


using std::vector;


#include <string>


using std::string;


#include <stack>


using std::stack;


#include <queue>


using std::queue;


using std::priority_queue;


#include <set>


using std::set;


#include <map>


using std::map;


using std::pair;


using std::make_pair;


#include <algorithm>


using std::sort;


#include <cassert>


//using std::assert;


 


class Application


{


      int n,k;


      unsigned long long int answer;


      public:


      Application()


      {


                   cin>>n;


                   k=0;


                   char mark;


                   while (cin>>mark) if (mark==’!’) k++;


      }


      int run()


      {


          answer=1;


          for (int i=n;i>0;i-=k)


              answer*=i;


          cout<<answer<<endl;


          return 0;


      }


};


 


int main()


{


    Application app;


    return app.run();


}