var x,y,z:real;
begin
readln(x,y,z);
if (xif (x=y) and (y=z) then writeln('Ravnostoronnii') else writeln('Ne ravnostoronnii');
end else writeln('Ne vozmojno sostavit');
end.
var a:array[1..10]of integer;
i,sum:integer;
begin
for i:=1 to 10 do readln(a[i]);
for i:=1 to 9 do begin
if (a[i]>0) and (a[i+1]<0) then sum:=sum+1;<br>if (a[i]<0) and (a[i+1]>0) then sum:=sum+1;
end;
writeln(sum);
end.