#include #include #include #include #include #include #include #include #include using namespace std; template struct modnum { static constexpr int MOD = MOD_; static_assert(MOD_ > 0, "MOD must be positive"); private: using ll = long long; int v; static int minv(int a, int m) { a %= m; assert(a); return a == 1 ? 1 : int(m - ll(minv(m, a)) * ll(m) / a); } public: modnum() : v(0) {} modnum(ll v_) : v(int(v_ % MOD)) { if (v < 0) v += MOD; } explicit operator int() const { return v; } friend std::ostream& operator << (std::ostream& out, const modnum& n) { return out << int(n); } friend std::istream& operator >> (std::istream& in, modnum& n) { ll v_; in >> v_; n = modnum(v_); return in; } friend bool operator == (const modnum& a, const modnum& b) { return a.v == b.v; } friend bool operator != (const modnum& a, const modnum& b) { return a.v != b.v; } modnum inv() const { modnum res; res.v = minv(v, MOD); return res; } modnum neg() const { modnum res; res.v = v ? MOD-v : 0; return res; } modnum operator- () const { return neg(); } modnum operator+ () const { return modnum(*this); } modnum& operator ++ () { v ++; if (v == MOD) v = 0; return *this; } modnum& operator -- () { if (v == 0) v = MOD; v --; return *this; } modnum& operator += (const modnum& o) { v += o.v; if (v >= MOD) v -= MOD; return *this; } modnum& operator -= (const modnum& o) { v -= o.v; if (v < 0) v += MOD; return *this; } modnum& operator *= (const modnum& o) { v = int(ll(v) * ll(o.v) % MOD); return *this; } modnum& operator /= (const modnum& o) { return *this *= o.inv(); } friend modnum operator ++ (modnum& a, int) { modnum r = a; ++a; return r; } friend modnum operator -- (modnum& a, int) { modnum r = a; --a; return r; } friend modnum operator + (const modnum& a, const modnum& b) { return modnum(a) += b; } friend modnum operator - (const modnum& a, const modnum& b) { return modnum(a) -= b; } friend modnum operator * (const modnum& a, const modnum& b) { return modnum(a) *= b; } friend modnum operator / (const modnum& a, const modnum& b) { return modnum(a) /= b; } }; template T pow(T a, long long b) { assert(b >= 0); T r = 1; while (b) { if (b & 1) r *= a; b >>= 1; a *= a; } return r; } const int STRING_SZ = 200000; typedef modnum<998244353> mnum1; typedef modnum<1000000007> mnum2; typedef pair shash; const mnum1 HASH1 = 3137; const mnum2 HASH2 = 1009; mnum1 hash1pows[STRING_SZ+1]; mnum2 hash2pows[STRING_SZ+1]; shash hashes[STRING_SZ+1]; string s; void init() { hash1pows[0] = 1; for(int i = 1; i <= STRING_SZ; i++) hash1pows[i] = hash1pows[i-1] * HASH1; hash2pows[0] = 1; for(int i = 1; i <= STRING_SZ; i++) hash2pows[i] = hash2pows[i-1] * HASH2; } inline pair getHash(int lhs, int rhs) { mnum1 a = hashes[rhs].first - hashes[lhs].first * hash1pows[rhs-lhs]; mnum2 b = hashes[rhs].second - hashes[lhs].second * hash2pows[rhs-lhs]; return {(int)a, (int)b}; } void genHash() { for(int i = 0; i < (int)s.size(); i++) { hashes[i+1].first = hashes[i].first * HASH1 + s[i]; hashes[i+1].second = hashes[i].second * HASH2 + s[i]; } } vector>> queries[200005]; // string, int ret[200005]; int main() { cin >> s; int q; cin >> q; for(int i = 0; i < q; i++) { string ss; int k; cin >> ss >> k; queries[ss.size()].emplace_back(ss, make_pair(--k, i)); } memset(ret, -1, sizeof(ret)); init(); genHash(); for(int a = 1; a <= (int)s.size(); a++) { if(queries[a].size() == 0) continue; int amt = 0; map, vector> dp; for(int b = a; b <= (int)s.size(); b++) { auto h = getHash(b - a, b); dp[make_pair((int)h.first, (int)h.second)].push_back(b-a+1); } for(auto qry: queries[a]) { mnum1 lhs = 0; mnum2 rhs = 0; for(auto ch: qry.first) { lhs *= HASH1; lhs += ch; rhs *= HASH2; rhs += ch; } array qrya = {(int)lhs, (int)rhs, 0}; if(!dp.count({qrya[0], qrya[1]})) continue; vector& idx = dp[{qrya[0], qrya[1]}]; if(qry.second.first < (int)idx.size()) ret[qry.second.second] = idx[qry.second.first]; } } for(int i = 0; i < q; i++) cout << ret[i] << "\n"; }