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  1. program chasing;
  2. Uses Math;
  3.  
  4. var
  5.      Bs, Bx, By, Ds, Dx, Dy, posizione : LongInt;
  6.      dir                       : Char;
  7.      T, tdogoriz,tdogvert, tdog, spaziopall, spvert, sporiz, spazio  : real;
  8. begin
  9.  
  10.     (*assign(input,  'input.txt');  reset(input);
  11.     assign(output, 'output.txt'); rewrite(output);*)
  12.  
  13.  
  14.     ReadLn(Dx, Dy, Ds);
  15.  
  16.     ReadLn(Bx, By, Bs);
  17.  
  18.     ReadLn(dir);
  19.  
  20.     T := 0; tdog:=1;
  21.     sporiz:= abs(Dx-Bx); spvert:=abs(Dy-By);
  22.     tdogoriz:=sporiz / Ds;  tdogvert:=spvert / Ds;
  23.     spaziopall:= Bs*tdog;
  24.  
  25.     if ((Dx>Bx) and (Dy>By)) then posizione:=1
  26.                       else if ((Dx>Bx) and (Dy<By)) then posizione:=4
  27.                            else if ((Dx<Bx) and (Dy>By)) then posizione:=2
  28.                                 else if ((Dx<Bx) and (Dy<By)) then posizione:=3;
  29.    if ((posizione=1) or (posizione=4)) and (dir='R') and (spaziopall<=sporiz) then 
  30.                                                            begin
  31.                                                              spazio:=sporiz; tdog:=tdogvert;
  32.                                                              Ds:=-Ds; spaziopall:=-spaziopall;
  33.                                                            end
  34.                                                          else
  35.                                                           if ((posizione=1) or (posizione=4)) and (dir='R') and (spaziopall>sporiz) then
  36.                                                                                                                   if (Ds>Bs) then   begin spazio:=sporiz; tdog:=tdogvert; end
  37.                                                                                                                              else begin writeln(-1); exit;end;
  38.  
  39.  
  40.    T:=tdog+ (spazio+spaziopall) / (abs(Ds-Bs)) ; 
  41.    if T>0 then WriteLn(ceil(T))
  42.           else writeln(-1);
  43.  
  44. end.
  45.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin 
7 -9 1
5 -8 2
R
stdout 
1
https://ideone.com/gK2TQx
language:
Pascal (fpc 3.0.4)
created:
3 days ago
visibility:
public

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