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#define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/lesson/1/ALDS1/14/ALDS1_14_B" #include "../../string/rolling_hash.hpp" #include <bits/stdc++.h> using namespace std; int main() { string t, p; cin >> t >> p; rolling_hash th(t), ph(p); for (ll i : rep((ll)t.size() - (ll)p.size() + 1)) { if (th.get_hash(i, i + p.size()) == ph.get_hash(0, p.size())) cout << i << endl; } }
#line 1 "test/onlinejudge.u-aizu.ac.jp/String_Search.0.test.cpp" #define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/lesson/1/ALDS1/14/ALDS1_14_B" #line 2 "string/rolling_hash.hpp" #line 2 "template.hpp" #include <bits/stdc++.h> using namespace std; #define all(a) begin(a), end(a) #define rall(a) rbegin(a), rend(a) #define uniq(a) (a).erase(unique(all(a)), (a).end()) #define t0 first #define t1 second using ll = long long; using ull = unsigned long long; using pll = pair<ll, ll>; using vll = vector<ll>; constexpr double pi = 3.14159265358979323846; constexpr ll dy[9] = {0, 1, 0, -1, 1, 1, -1, -1, 0}; constexpr ll dx[9] = {1, 0, -1, 0, 1, -1, -1, 1, 0}; constexpr ll sign(ll a) { return (a > 0) - (a < 0); } constexpr ll fdiv(ll a, ll b) { return a / b - ((a ^ b) < 0 && a % b); } constexpr ll cdiv(ll a, ll b) { return -fdiv(-a, b); } constexpr ll pw(ll n) { return 1ll << n; } constexpr ll flg(ll n) { return 63 - __builtin_clzll(n); } constexpr ll clg(ll n) { return n == 1 ? 0 : flg(n - 1) + 1; } constexpr ll safemod(ll x, ll mod) { return (x % mod + mod) % mod; } template <typename T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>; template <typename T> constexpr T sq(const T &a) { return a * a; } template <typename T, typename U> constexpr bool chmax(T &a, const U &b) { return a < b ? a = b, true : false; } template <typename T, typename U> constexpr bool chmin(T &a, const U &b) { return a > b ? a = b, true : false; } template <typename T, typename U> ostream &operator<<(ostream &os, const pair<T, U> &a) { os << "(" << a.first << ", " << a.second << ")"; return os; } template <typename T, typename U, typename V> ostream &operator<<(ostream &os, const tuple<T, U, V> &a) { os << "(" << get<0>(a) << ", " << get<1>(a) << ", " << get<2>(a) << ")"; return os; } template <typename T> ostream &operator<<(ostream &os, const vector<T> &a) { os << "("; for (auto itr = a.begin(); itr != a.end(); ++itr) os << *itr << (next(itr) != a.end() ? ", " : ""); os << ")"; return os; } template <typename T> ostream &operator<<(ostream &os, const set<T> &a) { os << "("; for (auto itr = a.begin(); itr != a.end(); ++itr) os << *itr << (next(itr) != a.end() ? ", " : ""); os << ")"; return os; } template <typename T> ostream &operator<<(ostream &os, const multiset<T> &a) { os << "("; for (auto itr = a.begin(); itr != a.end(); ++itr) os << *itr << (next(itr) != a.end() ? ", " : ""); os << ")"; return os; } template <typename T, typename U> ostream &operator<<(ostream &os, const map<T, U> &a) { os << "("; for (auto itr = a.begin(); itr != a.end(); ++itr) os << *itr << (next(itr) != a.end() ? ", " : ""); os << ")"; return os; } #ifdef ONLINE_JUDGE #define dump(...) (void(0)) #else void debug() { cerr << endl; } template <typename Head, typename... Tail> void debug(Head &&head, Tail &&... tail) { cerr << head; if (sizeof...(Tail)) cerr << ", "; debug(tail...); } #define dump(...) cerr << __LINE__ << ": " << #__VA_ARGS__ << " = ", debug(__VA_ARGS__) #endif struct rep { struct itr { ll v; itr(ll v) : v(v) {} void operator++() { ++v; } ll operator*() const { return v; } bool operator!=(itr i) const { return v < *i; } }; ll l, r; rep(ll l, ll r) : l(l), r(r) {} rep(ll r) : rep(0, r) {} itr begin() const { return l; }; itr end() const { return r; }; }; struct per { struct itr { ll v; itr(ll v) : v(v) {} void operator++() { --v; } ll operator*() const { return v; } bool operator!=(itr i) const { return v > *i; } }; ll l, r; per(ll l, ll r) : l(l), r(r) {} per(ll r) : per(0, r) {} itr begin() const { return r - 1; }; itr end() const { return l - 1; }; }; struct io_setup { static constexpr int PREC = 20; io_setup() { cout << fixed << setprecision(PREC); cerr << fixed << setprecision(PREC); }; } iOS; #line 2 "util/xorshift.hpp" #line 4 "util/xorshift.hpp" template <typename V> V xor64(V lb, V ub) { static ull x = 88172645463325252ull; x ^= x << 7; return lb + (x ^= x >> 9) % (ub - lb); } #line 5 "string/rolling_hash.hpp" struct rolling_hash { static constexpr ull MOD = pw(61) - 1; static vector<ull> pbase; vector<ull> hash; static void resize_pbase(ll n) { ll sz = pbase.size(); if (sz > n) return; pbase.resize(n + 1); for (ll i : rep(sz - 1, n)) pbase[i + 1] = mul(pbase[i], pbase[1]); } template <typename T> static T calc_mod(T val) { val = (val & MOD) + (val >> 61); if (val >= MOD) val -= MOD; return val; } static ull mul(ull a, ull b) { return calc_mod((__uint128_t)a * b); } static ull concat(ull lhs, ull rhs, ll rn) { resize_pbase(rn); return calc_mod(mul(lhs, pbase[rn]) + rhs); } rolling_hash(const string &src) : hash(src.size() + 1) { for (ll i : rep(src.size())) hash[i + 1] = calc_mod(mul(hash[i], pbase[1]) + src[i]); resize_pbase(src.size()); } template <typename T> rolling_hash(const vector<T> &src) : hash(src.size() + 1) { for (ll i : rep(src.size())) hash[i + 1] = calc_mod(mul(hash[i], pbase[1]) + src[i]); resize_pbase(src.size()); } ull get_hash(ll l, ll r) const { return calc_mod(MOD - mul(hash[l], pbase[r - l]) + hash[r]); } }; vector<ull> rolling_hash::pbase{1, xor64(MOD >> 1, MOD)}; #line 3 "test/onlinejudge.u-aizu.ac.jp/String_Search.0.test.cpp" #line 5 "test/onlinejudge.u-aizu.ac.jp/String_Search.0.test.cpp" using namespace std; int main() { string t, p; cin >> t >> p; rolling_hash th(t), ph(p); for (ll i : rep((ll)t.size() - (ll)p.size() + 1)) { if (th.get_hash(i, i + p.size()) == ph.get_hash(0, p.size())) cout << i << endl; } }