var x,y,z,k: integer;
begin
readln(x,y,z);
k:=0;
if x<0 then k:=k+1;
if y<0 then k:=k+1;
if z<0 then k:=k+1;
if k>0 then writeln(k) else writeln('No');
end.
var x,y,z,k: integer;
begin
readln(x,y,z);
k:=0;
if x<0 then k:=k+1;
if y<0 then k:=k+1;
if z<0 then k:=k+1;
if k>0 then writeln(k) else writeln('No');
end.