Submission #1016129

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1016129	2024-07-07 12:29:04	fuad27	Dabbeh (INOI20_dabbeh)	C++17	100 / 100	488 ms	63292 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3")
namespace hsg {
  mt19937_64 rng(chrono::steady_clock().now().time_since_epoch().count());
  const long long mod = (long long)1e18+9;
  long long R=rng()%(mod);
  struct PolyHash {
    vector<long long> pref,pw;
    int n;
    PolyHash(string s) {
      n = s.size();
      pref.resize(n+1);
      pw.resize(n+1);
      pw[0]=1;
      for(int i = 1;i<=n;i++) {
        pref[i] = ((__int128_t)pref[i-1]*R)%mod;
        pref[i]+=s[i-1];
        pref[i]%=mod;
        pw[i] = ((__int128_t)pw[i-1]*R)%mod;
      }
    }
    long long get(int l, int r) {
 
      long long hs=(pref[r]-((__int128_t)pref[l-1]*pw[r-l+1])%mod + mod)%mod;
      return hs;
    }
  };
};
 
 
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• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 50 / 50