제출 #824988

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
824988	2023-08-14 12:53:36	phoenix	Crossing (JOI21_crossing)	C++17	100 / 100	273 ms	40400 KiB

Main

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#include<bits/stdc++.h>
using namespace std;
using ll = long long;
namespace hashing {
    struct H {
        int len;
        ll h1;
        unsigned long long h2;
        H() : len(0), h1(0), h2(0) {} 
        H(int c) : len(1), h1(c), h2(c) {}
    };
    map<char, int> tran = {
        {'J', 0},
        {'O', 1},
        {'I', 2}
    };
    const int MOD = 1e9 + 7, MAX_LEN = 2e5 + 10;
    ll p1[MAX_LEN];
    unsigned long long p2[MAX_LEN];
    mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
    H spam_str[MAX_LEN][3];
    H operator + (const H a, const H b) {
        H res;
        res.len = a.len + b.len;
        res.h1 = (a.h1 * p1[b.len] + b.h1) % MOD;
 
 
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