character*50::S
  integer::t,u,length
  read*, S,t,u
  length = LEN_TRIM(S)
  t = t+1
  u = u+1
  if(t.eq.u) then
     S(t:length-1) = S(t+1:length)
     S(length:length)=''
  else
     if(t.lt.u) then
        S(t:length-1) = S(t+1:length)
        S(u-1:length-2) = S(u:length-1)
     else
        S(u:length-1) = S(u+1:length)
        S(t-1:length-2) = S(t:length-1)
     end if
     S(length-1:length)=''
  end if
  print '(a)',S
end program