#include using namespace std; //高速化 struct ponjuice{ponjuice(){cin.tie(0);ios::sync_with_stdio(0);cout<using vc = vector; templateusing vvc = vc>; templateusing vvvc = vvc>; using vi = vc; using vvi = vvc; using vvvi = vvvc; using vl = vc; using vvl = vvc; using vvvl = vvvc; using pi = pair; using pl = pair; using ull = unsigned ll; templateusing priq = priority_queue; templateusing priqg = priority_queue, greater>; // for文 #define overload4(a, b, c, d, e, ...) e #define rep1(n) for(ll i = 0; i < n; i++) #define rep2(i, n) for(ll i = 0; i < n; i++) #define rep3(i, a, b) for(ll i = a; i < b; i++) #define rep4(i, a, b, step) for(ll i = a; i < b; i+= step) #define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__) #define per1(n) for(ll i = n-1; i >= 0; i--) #define per2(i, n) for(ll i = n-1; i >= 0; i--) #define per3(i, a, b) for(ll i = b-1; i >= a; i--) #define per4(i, a, b, step) for(ll i = b-1; i >= a; i-= step) #define per(...) overload4(__VA_ARGS__, per4, per3, per2, per1)(__VA_ARGS__) //関数 #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #define si(x) (ll)(x).size() templateinline bool chmax(S& a, T b){return a < b && ( a = b , true);} templateinline bool chmin(S& a, T b){return a > b && ( a = b , true);} inline void yes(){cout << "Yes\n";} inline void no(){cout << "No\n";} inline void yesno(bool y = true){if(y)yes();else no();} //定数 constexpr ll mod = 998244353; constexpr ll minf=-(1<<29); constexpr ll inf=(1<<29); constexpr ll MINF=-(1LL<<60); constexpr ll INF=(1LL<<60); const int dx[4] ={-1, 0, 1, 0}; const int dy[4] ={ 0, 1, 0,-1}; const int dx8[8] ={-1,-1,-1, 0, 1, 1, 1, 0}; const int dy8[8] ={-1, 0, 1, 1, 1, 0,-1,-1}; void solve(); int main() { int t = 1; // cin >>t; while(t--)solve(); } /* せっかくなので、PPC は全てコメント書きます ちょっとだるそうか? 普通にstackに積んでいくだけで良さそうに見えるな c を受け取っておりバカ */ void solve(){ int q; cin >> q; string st; stack del; while(q--) { int t; cin >> t; if(t == 1) { char c; cin >> c; st += c; if(st.size() >= 3 && st.substr(st.size()-3, 3) == "(|)") { rep(i,0,3) st.pop_back(); del.push(1); } else { del.push(0); } } else { if(del.top()) { st += "(|"; }else { st.pop_back(); } del.pop(); } cout << (st.size() == 0 ? "Yes" : "No") << endl; } }