#include using namespace std; using int64 = long long; const int mod = 998244353; const int64 infll = (1LL << 62) - 1; const int inf = (1 << 30) - 1; struct IoSetup { IoSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(10); cerr << fixed << setprecision(10); } } iosetup; template< typename T1, typename T2 > ostream &operator<<(ostream &os, const pair< T1, T2 > &p) { os << p.first << " " << p.second; return os; } template< typename T1, typename T2 > istream &operator>>(istream &is, pair< T1, T2 > &p) { is >> p.first >> p.second; return is; } template< typename T > ostream &operator<<(ostream &os, const vector< T > &v) { for (int i = 0; i < (int) v.size(); i++) { os << v[i] << (i + 1 != v.size() ? " " : ""); } return os; } template< typename T > istream &operator>>(istream &is, vector< T > &v) { for (T &in: v) is >> in; return is; } template< typename T1, typename T2 > inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); } template< typename T1, typename T2 > inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); } template< typename T = int64 > vector< T > make_v(size_t a) { return vector< T >(a); } template< typename T, typename... Ts > auto make_v(size_t a, Ts... ts) { return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...)); } template< typename T, typename V > typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) { t = v; } template< typename T, typename V > typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) { for (auto &e: t) fill_v(e, v); } template< typename F > struct FixPoint: F { explicit FixPoint(F &&f): F(forward< F >(f)) {} template< typename... Args > decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, forward< Args >(args)...); } }; template< typename F > inline decltype(auto) MFP(F &&f) { return FixPoint< F >{forward< F >(f)}; } /** * @brief Rolling-Hash(ローリングハッシュ) * @see https://qiita.com/keymoon/items/11fac5627672a6d6a9f6 * @docs docs/rolling-hash.md */ struct RollingHash { static const uint64_t mod = (1ull << 61ull) - 1; using uint128_t = __uint128_t; vector< uint64_t > power; const uint64_t base; static inline uint64_t add(uint64_t a, uint64_t b) { if((a += b) >= mod) a -= mod; return a; } static inline uint64_t mul(uint64_t a, uint64_t b) { uint128_t c = (uint128_t) a * b; return add(c >> 61, c & mod); } static inline uint64_t generate_base() { mt19937_64 mt(chrono::steady_clock::now().time_since_epoch().count()); uniform_int_distribution< uint64_t > rand(1, RollingHash::mod - 1); return rand(mt); } inline void expand(size_t sz) { if(power.size() < sz + 1) { int pre_sz = (int) power.size(); power.resize(sz + 1); for(int i = pre_sz - 1; i < sz; i++) { power[i + 1] = mul(power[i], base); } } } explicit RollingHash(uint64_t base = generate_base()) : base(base), power{1} {} vector< uint64_t > build(const string &s) const { int sz = s.size(); vector< uint64_t > hashed(sz + 1); for(int i = 0; i < sz; i++) { hashed[i + 1] = add(mul(hashed[i], base), s[i]); } return hashed; } template< typename T > vector< uint64_t > build(const vector< T > &s) const { int sz = s.size(); vector< uint64_t > hashed(sz + 1); for(int i = 0; i < sz; i++) { hashed[i + 1] = add(mul(hashed[i], base), s[i]); } return hashed; } uint64_t query(const vector< uint64_t > &s, int l, int r) { expand(r - l); return add(s[r], mod - mul(s[l], power[r - l])); } uint64_t combine(uint64_t h1, uint64_t h2, size_t h2len) { expand(h2len); return add(mul(h1, power[h2len]), h2); } int lcp(const vector< uint64_t > &a, int l1, int r1, const vector< uint64_t > &b, int l2, int r2) { int len = min(r1 - l1, r2 - l2); int low = 0, high = len + 1; while(high - low > 1) { int mid = (low + high) / 2; if(query(a, l1, l1 + mid) == query(b, l2, l2 + mid)) low = mid; else high = mid; } return low; } }; int main() { int N; cin >> N; RollingHash hash; set< uint64_t > st; while(N--) { string s; cin >> s; auto v = hash.build(s); if(st.count(v.back())) cout << "Yes\n"; else cout << "No\n"; st.emplace(v.back()); for(int i = 1; i < (int) s.size(); i++) { auto A = hash.query(v, 0, i - 1); auto B = hash.query(v, i - 1, i); auto C = hash.query(v, i, i + 1); auto D = hash.query(v, i + 1, (int) s.size()); st.emplace(hash.combine(hash.combine(hash.combine(A,C,1),B,1),D,(int)s.size()-(i+1))); } } }