import cpp
import semmle.code.cpp.valuenumbering.HashCons

from HashCons h
where strictcount(h.getAnExpr()) > 1
select h,
  strictconcat(Location loc |
    loc = h.getAnExpr().getLocation()
  |
    loc.getStartLine() + ":c" + loc.getStartColumn() + "-c" + loc.getEndColumn(), " "
  )