Sorry, but I don't understand this problem (WA 15)
Here is my code (C++)
Help me please: what is wrong?



#include <iostream>
using namespace std;
int main()
{
    double a,b,d,e;
    int c,f;
    cin >> a;
    cin >> b;
    a=a*1000000;
    b=b*1000000;
    for (c=1;c<=100000;c++)
    {
        d=(double)100*1000000/c;
        e=0;
        f=0;
        while (e<=b)
        {
              if (e>a and e<b)
              {
                      cout << c << endl;
                      f=1;
                      break;
              }
              e=e+d;
        }
        if (f==1)
            break;
    }
}