uses crt;
var n:integer;
u:real;
begin
clrscr;
n:=1;
u:=cos(n)/sin(n);
if u<0 then write('n=1 u=',u:0:2)
else
begin
while u>=0 do
begin
n:=n+1;
u:=cos(n)/sin(n);
end;
write('n=',n,' u=',u:0:3);
end;
readln
end.
uses crt;
var n:integer;
u:real;
begin
clrscr;
n:=1;
u:=cos(n)/sin(n);
if u<0 then write('n=1 u=',u:0:2)
else
begin
while u>=0 do
begin
n:=n+1;
u:=cos(n)/sin(n);
end;
write('n=',n,' u=',u:0:3);
end;
readln
end.