program videmne;
{$APPTYPE CONSOLE}
var a,b,c:real;
k:integer;
begin
readln(a,b,c);
k:=0;
if a<0 then k:=k+1;
if b<0 then k:=k+1;
if c<0 then k:=k+1;
writeln(k);
readln;
end.