var a,b,c:integer;
begin
writeln('pervoe chislo');
readln(a);
writeln('vtoroe chislo');
readln(b);
writeln('tretee chislo');
readln(c);
if (a+b<=c)or(a+c<=b)or(b+c<=a)then 
write('Ne mogut') else write('mogut');
end.