thanx Don.
i think my logic is not so good . now i try to make it using bfs .
*Anshul Agarwal
Nit Allahabad
Computer Science**
*


On Tue, Nov 15, 2011 at 5:36 PM, Don <[email protected]> wrote:

> This input
>
> 100 1 5 5 91
>
> Should output 20. Yours says "Take the stairs".
>
> 100 1 5 5 89
>
> Should output 76. Yours says "Take the stairs."
>
> Don
>
> On Nov 14, 8:27 am, Anshul AGARWAL <[email protected]> wrote:
> > problem ishttp://www.spoj.pl/problems/ELEVTRBL/
> > and my solution is give wrong answer on spoj . Plz help me to find in
> which
> > case my solution give wrong answer.
> >
> > *
> > #include<iostream>
> > **
> > #include<stdio.h>
> > using namespace std;
> > int main()
> > {
> >     long long int f,s,u,d,g,c,p;
> >
> >     scanf("%lld%lld%lld%lld%lld",&f,&s,&g,&u,&d);
> >
> >     p=0;
> >
> >     if(s==g)
> >     printf("0\n");
> >     if(s>g&&u==0&&d!=0)
> >     {
> >         int temp=s-g;
> >         if((temp/d)*d==temp)
> >         {
> >                 p=temp/d;
> >                 printf("%lld\n",p);
> >
> >         }
> >         else
> >         printf("use the stairs\n");
> >
> >     }
> >     else if(s>g)
> >     {
> >            int temp =s;
> >            s=g;
> >            g=temp;
> >
> >           // cout<<"2"<<endl;
> >            }
> >            //cout<<"1"<<endl;
> >            c=s;
> >     if(s<g)
> >     {     while(1)
> >           {
> >               int temp=g-c;
> >               int q;
> >               if(u==0)
> >               {
> >                       if(c==g)
> >                       {
> >                               printf("0\n");
> >                               break;
> >                       }
> >                       else
> >                      {
> >                           printf("use the stairs\n");
> >                             break;
> >                             }
> >               }
> >               if(temp/u==(temp/u)*u)
> >               {
> >                                     q=temp/u;
> >
> >                                     }
> >                                     else
> >                                     q=temp/u+1;
> >
> >               if((c+q*u)<=f)
> >               {  // cout<<"1"<<endl;
> >                                p=p+q;
> >                                c=(q)*u+c;
> >                                //cout<<c<<endl;
> >                                }
> >               else
> >               {//cout<<"2"<<endl;
> >                    p=p+temp/u;
> >                    c=(temp/u)*u+c;
> >                    }
> >               if(c==g)
> >               {
> >                    //   cout<<"3"<<endl;
> >                       printf("%lld",p);
> >                       break;
> >               }
> >               if(u==d||d==0||((u%d==0)&&d!=0)||(d%u==0&&u!=0))
> >               {
> >
> >               printf("use the stairs\n");
> >                             break;}
> >               if(c-d>=0)
> >               {      //   cout<<"4"<<endl;
> >                         c=c-d;
> >                         p+=1;
> >                        // cout<<c<<endl;
> >                         }
> >                         else
> >                         {
> >                          //   cout<<"5"<<endl;
> >                             printf("use the stairs\n");
> >                             break;
> >                             }
> >           }
> >      }
> >
> > }
> >
> > Anshul Agarwal
> > Nit Allahabad
> > Computer Science**
> > *
>
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