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Cod sursa(job #127324)
var n,i,lx,ly,lz,rx,ry,rz:word;
dx,dy,dz,sx,sy,sz,x,y,z:longint;
f,g:text;
begin
assign(f,'inundatii.in');
assign(g,'inundatii.out');
reset(f);
rewrite(g);
readln(f,n);
for i:=1 to n do begin
readln(f,x,y,z);
sx:=sx+x;
sy:=sy+y;
sz:=sz+z;
end;
sx:=round(sx/n);
sy:=round(sy/n);
sz:=round(sz/n);
close(f);
reset(f);
readln(f);
for i:=1 to n do begin
readln(f,x,y,z);
dx:=dx+abs(sx-x);
dy:=dy+abs(sy-y);
dz:=dz+abs(sz-z);
if x>sx then rx:=rx+1
else if x<sx then lx:=lx+1;
if y>sy then ry:=ry+1
else if y<sy then ly:=ly+1;
if z>sz then rz:=rz+1
else if z<sz then lz:=lz+1;
end;
dx:=dx+round(((1+rx)*rx)/2)+round(((1+lx)*lx)/2);
if lx+rx=n then if rx>lx then dx:=dx-rx else dx:=dx-lx;
dy:=dy+round(((1+ry)*ry)/2)+round(((1+ly)*ly)/2);
if ly+ry=n then if ry>ly then dy:=dy-ry else dy:=dy-ly;
dz:=dz+round(((1+rz)*rz)/2)+round(((1+lz)*lz)/2);
if lz+rz=n then if rz>lz then dz:=dz-rz else dz:=dz-lz;
writeln(g,dx+dy+dz);
close(f);
close(g);
end.