Submission #537742

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
537742	2022-03-15 12:47:32	Mahfel	Crossing (JOI21_crossing)	C++17	100 / 100	359 ms	25996 KiB

Main

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#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define lt(x) 2*x+1
#define rt(x) 2*x+2
const ll MXN = 2e5 + 20 , PR1 = 19 , PR2 = 31 , MOD1 = 998244353 , MOD2 = 1e9 + 9;
ll po1[MXN] , po2[MXN] , pref1[MXN] , pref2[MXN];
set<pair<ll,ll>> H;
pair<ll,ll> Hash(vector<int> v) {
    ll h1 = 0 , h2 = 0 , p1 = 1 , p2 = 1;
    for(auto x : v) {
        x++;
        h1 += x*p1 % MOD1; h1 %= MOD1;
        h2 += x*p2 % MOD2; h2 %= MOD2;
        p1 *= PR1; p1 %= MOD1;
        p2 *= PR2; p2 %= MOD2;
    }
    return {h1 , h2};
}
vector<int> str[3];
int n,q;
void prep(int c1 , int c2 , int c3) {
    vector<int> res(n);
    for(int i = 0 ; i < n ; i++) {
        res[i] = ((c1*str[0][i]) + (c2*str[1][i]) + (c3*str[2][i])) % 3;
    }
    H.insert(Hash(res));
}
inline ll P(ll a , ll b , ll MOD) {
    ll res = 1;
 
 
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• Subtask 1: 3 / 3
• Subtask 2: 23 / 23
• Subtask 3: 23 / 23
• Subtask 4: 51 / 51