int pp = 1; //number of points in the same line of the point i            if (k.size()==0){pp=0;}              for (int jj=1;jj<k.size();jj++){ //count pp                if (k[jj]==k[jj-1]){                    pp++;                }else{                    if (pp>res){res=pp}                    pp = 1;                }            }            if (pp+dup>res){res = pp+dup;}            return res;