program zikl21;
function one(var a,b:real):integer;
var
x:integer;
begin
x:=round(a*b-3);
one:=x;
end;
var a,b,x:real;
begin
writeln('vvedite a');
readln(a);
writeln('vvedite b');
readln(b);
if a>b then
x:=one(a,b);
if a=b then
x:=25;
if a<b then
x:=round((a-5)/b);
writeln(x);
end.