Submission #1188291

#	Time	Username	Problem	Language	Result	Execution time	Memory
1188291		SmuggingSpun	Vlak (COCI20_vlak)	C++20	70 / 70	11 ms	15524 KiB

Main

#include<bits/stdc++.h>
#define taskname "B"
using namespace std;
struct Node{
	int child[26];
	Node(){
		memset(this->child, -1, sizeof(this->child));
	}	
};
struct Trie{
	vector<Node>trie;
	Trie(){
		trie.emplace_back(Node());
	}
	void insert(const string& s){
		int root = 0;
		for(const char& c : s){
			int nxt = c - 97;
			if(trie[root].child[nxt] == -1){
				trie[root].child[nxt] = trie.size();
				trie.emplace_back(Node());
			}
			root = trie[root].child[nxt];
		}
	}
};
Trie a, b;
bool play(int ra, int rb, bool lvl){
	if(lvl){
		if(ra == -1){
			return false;
		}
		for(int i = 0; i < 26; i++){
			int nxt = a.trie[ra].child[i];
			if(nxt != -1 && !play(nxt, b.trie[rb].child[i], !lvl)){
				return true;
			}
		}
		return false;
	}
	if(rb == -1){
		return false;
	}
	for(int i = 0; i < 26; i++){
		int nxt = b.trie[rb].child[i];
		if(nxt != -1 && !play(a.trie[ra].child[i], nxt, !lvl)){
			return true;
		}
	}
	return false;
}
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
	int n;
	cin >> n;
	for(int i = 0; i < n; i++){
		string s;
		cin >> s;
		a.insert(s);
	}
	cin >> n;
	for(int i = 0; i < n; i++){
		string s;
		cin >> s;
		b.insert(s);
	}
	cout << (play(0, 0, true) ? "Nina" : "Emilija");
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:55:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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