Submission #445512

#	Time	Username	Problem	Language	Result	Execution time	Memory
445512		grt	Vlak (COCI20_vlak)	C++17	10 / 70	74 ms	5828 KiB

Main

#include <bits/stdc++.h>
#define ST first
#define ND second
#define PB push_back

using namespace std;
using ll = long long;
using pi = pair<int,int>;
using vi = vector<int>;

const int mod = 1e9 + 7, p = 31;
int n, m;
set<int>pl[2];
map<pair<int, bool>, bool>mp;

void rec(int hsh, bool turn) {
	bool win = false;
	for(int i = 1; i <= 26; ++i) {
		int h2 = ((ll)hsh * p + i) % mod;
		if(pl[turn].count(h2)) {
			if(!mp.count({h2, turn ^ 1})) rec(h2, turn ^ 1);
			if(!mp[{h2, turn ^ 1}]) win = true;
		}
	}
	mp[{hsh, turn}] = win;
}


int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin >> n;
	for(int i = 0; i < n; ++i) {
		string s;
		cin >> s;
		int hsh = 0;
		for(auto c : s) {
			hsh = ((ll)hsh * p + (c - 'a' + 1)) % mod;
			pl[0].insert(hsh);
		}
	}
	cin >> m;
	for(int i = 0; i < m; ++i) {
		string s;
		cin >> s;
		int hsh = 0;
		for(auto c : s) {
			hsh = ((ll)hsh * p + (c - 'a' + 1)) % mod;
			pl[1].insert(hsh);
		}
	}
	rec(0, 1);
	if(mp[{0, 1}]) cout << "Nina";
	else cout << "Emilija";
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10