#include <16f877a.h>
#use delay(clock=4000000)
#use fast_io(A)
#use fast_io(B)
#use fast_io(C)
#use fast_io(D)
#use fast_io(E)
#fuses XT, NOPROTECT, NOWDT, PUT, NOLVP, NOBROWNOUT,

   
Void Main(){
   
   set_tris_a(0b00011110);
   set_tris_b(0b00000000);
   set_tris_c(0b00000000);
   set_tris_d(0b00000000);
   set_tris_e(0b00000000);
   output_a(0);
   output_b(0);
   output_c(0);
   output_d(0);
   output_e(0);
  
   While (True){
     if(!input(pin_a1)){
     output_c(0b00000001);
     output_b(0b00000001);
     
     }
     if(!input(pin_a3)){
     output_c(0b00000001);
     }
      if(!input(pin_a2)){
     output_c(0b00010010);}
      if(!input(pin_a4)){
     output_c(0b00010010);}
   }
 }