URAL1011[Conductors]

水题，就是精度要注意一下。（哎，害我WA3次，重写1次）

CODE:

/*

PROGRAM: $PROGRAM

AUTHOR: Su Jiao

DATE: 2010-3-13

DESCRIPTION:

$DESCRIPTION

*/

#include <iostream>

using std::cin;

using std::cout;

using std::endl;

#include <sstream>

using std::stringstream;

#include <vector>

using std::vector;

#include <string>

using std::string;

#include <stack>

using std::stack;

#include <queue>

using std::queue;

#include <map>

using std::map;

using std::pair;

using std::make_pair;

#include <algorithm>

using std::sort;

#include <cassert>

//using std::assert;

 

class Application

{

      static const int oo=~(1<<31);

      double P,Q;

      public:

      Application()

      {

                    cin>>P>>Q;

      }

      int run()

      {

          int Pi=int(P*double(100)+0.5);

          int Qi=int(Q*double(100)+0.5);

         

          int answer;

          for (answer=1;;answer++)

          {

              int min=answer*Pi;

              int max=answer*Qi;

              int l=min/10000–1;

              int r=max/10000+1;

              int counter=0;

              for (int i=l;i<=r;i++)

                  if ((i*10000>min)&&(i*10000<max))

                     counter++;

              if (counter)

                 break;

          }

          cout<<answer<<endl;

          return 0;

      }

};

 

int main()

{

    Application app;

    return app.run();

}