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- #include <iostream>
- #include <cmath>
- #include <math.h>
- #include <vector>
- #include <set>
- #include <unordered_set>
- #include <tuple>
- #include <map>
- #include <unordered_map>
- #include <string>
- #include <string.h>
- #include <utility>
- #include <algorithm>
- #include <queue>
- #include <deque>
- #include <iterator>
- #include <stdlib.h>
- #include <cstdlib>
- #include <bitset>
- using namespace std;
- typedef long long ll;
- inline ll subhash(vector<ll>& hash, ll l, ll r, ll mod, vector<ll>& pw) {
- ll big = hash[r];
- ll small = 0;
- if (l != 0) {
- small = (hash[l - 1] * pw[r - l + 1]) % mod;
- }
- return (big - small + mod) % mod;
- }
- int main() {
- const ll mod = 2e9 + 63;
- const ll p = 173;
- string entry; cin >> entry;
- string dima; cin >> dima;
- entry += entry;
- ll kol = entry.size();
- ll dimKol = dima.size();
- vector <ll> hash(kol);
- vector<ll> dimHash(dimKol);
- vector <ll> pw(50000);
- hash[0] = entry[0];
- for (int i = 1; i < kol; ++i) {
- hash[i] = ((hash[i - 1] * p) + entry[i]) % mod;
- }
- dimHash[0] = dima[0];
- for (int i = 1; i < kol; ++i) {
- dimHash[i] = ((dimHash[i - 1] * p) + dima[i]) % mod;
- }
- pw[0] = 1;
- for (int i = 1; i < 50000; ++i) {
- pw[i] = (pw[i - 1] * p) % mod;
- }
- ll dimHashAns = dimHash[dimKol - 1];
- for (int i = 1; i < dimKol + 1; ++i) {
- ll ans = subhash(hash, i, i + dimKol - 1, mod, pw);
- cout << ans << " " << dimHashAns << endl;
- if (dimHashAns == ans) {
- cout << i;
- exit(0);
- }
- }
- cout << -1;
- }
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