20
:((:()):))(a::(:)))(aa)a(a)()():)a(()(::()))((((()a)a((((()())((a()()()(()()(():a))()a)):a))))))
(()()((((((((:)aa())a():(:()a(a)):)()(:))())(a)a((((a:()(a((()()a)a)):(a(a)))a)((():))):a())
(()aa):a:():((a(():(a()(aa((a()(a)(:)()(a(::))):)(:a::a:()aaa::a):a(((()(:)))(((()a:)a::(())))))
a(a)::(((::)))())((a)(:((:a())):((::(:()(a)))i am trapped in a test case generator :(:(a(:::))
hacker cup: started :):)
a(a)(a)::(a:()a()a)():)(:)aaa)(((a:(())()a):)(()))()(a)aa)a(:)()):a(:((a())a)()(a):a)a(():)
()((:a(a()()a))())((:a(:a)(()a((((a((a(()(:aa()()()))):)(():):)(:(a))():(())(():()):):(()a))
(::((:)()()aa())():)a:)()(():(a())aa)))()::((():))((a(:(()):a:)):))())):)a::)()(:a)()a(:)()
a(aa):a()()aa(a)a(((((a:)()()(::aa::(a)::(:():((aa)a:()::(((a)():)))((a(()((a)aa(a):((:::)))))
:)(a):)(a)(a()(()(()):a()(a))(a(a))a(a:)))a((:aa::()()()aa)):):((():)):(::a:a)()a()):):)()
:((
(:)
(()a:::)a((:))(::a((a)(::aa((a):(:)(:)a()a(()))))facebook is hiring:)()()()a(a((:(a((:)()()))a))
(((a)):()a(()(((:))a((:)():(((()()a)))(:a(::)(a)))(a)((a::():(a)():)a(a(a(:aa(:()(a(((((()))))))))
a((:()(a):aa()::())(:(::)()()(a::)(a))()))a:):)(:)a()(((a)):::((:(:(((:a((()(a)(()):aa)))())))
)(
(:a))
aa:((:((a()(()()a(:)::)(:)a)(()a((a(aa((((((()aaa)):()aa):))))()()(((a))))()a)(()()))a())()
i am sick today (:()
(::a((a)a:()):):a)aa:)a(:::))(a())aa(a():))(:)a)((():)(:a:)a))):a(a)((:()(()())a))()a((()a))