{programmer:mogtaba amirzade 
url http:\\www.ifjam.com
}
program p21(input,output); {32}
{
this program say:can make triangle by a,b and c
}
var
a,b,c:real;
p:boolean;
begin
p:=false;
readln(a,b,c);
if (a+b>c)and(a+c>b)and(c+b>a) then
p:=true;
writeln(p);
readln
end.