Submission #487517

#	Time	Username	Problem	Language	Result	Execution time	Memory
487517		Nimbostratus	Vlak (COCI20_vlak)	C++17	70 / 70	36 ms	25956 KiB

Main

#include "bits/stdc++.h"
using namespace std;
#define endl '\n'
using lint = long long;
using pii = pair<int,int>;
constexpr int maxn = 2e5+5;
constexpr int inf = 2e9;
constexpr int mod = 1e9+7;

struct Node {
	vector<int> nxt = vector<int>(26, 0);
	bool end[2] = {false, false};
};

vector<Node> t = vector<Node>(1);
	
void addWord(string& s, int p, int nd = 0, int idx = 0) {
	if(idx == s.size()) {
		t[nd].end[p] = true;
		return;
	}
	if(!t[nd].nxt[s[idx] - 'a']) {
		t.push_back(Node());
		t[nd].nxt[s[idx] - 'a'] = t.size() - 1;
	}
	addWord(s, p, t[nd].nxt[s[idx] - 'a'], idx + 1);
	for(int v : t[nd].nxt) {
		if(!v)
			continue;
		t[nd].end[0] |= t[v].end[0];
		t[nd].end[1] |= t[v].end[1];
	}
}

bool solve(int u = 0, int d = 0) {
	if(d % 2 == 0 && !t[u].end[1])
		return 0;
	if(d % 2 == 1 && !t[u].end[0])
		return 1;
	for(int v : t[u].nxt) {
		if(!v)
			continue;
		bool w = solve(v, d + 1);
		if(w == d % 2)
			return d % 2 ? 1 : 0;
	}
	return d % 2 ? 0 : 1;
}

int n, m;
string a[maxn], b[maxn];

signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cin >> n;
	for(int i = 0; i < n; i++) {
		cin >> a[i];
		addWord(a[i], 0);
	}
	cin >> m;
	for(int i = 0; i < m; i++) {
		cin >> b[i];
		addWord(b[i], 1);
	}
	cout << (solve() ? "Emilija" : "Nina") << endl;
	
}

Compilation message (stderr)

Main.cpp: In function 'void addWord(std::string&, int, int, int)':
Main.cpp:18:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |  if(idx == s.size()) {
      |     ~~~~^~~~~~~~~~~

• 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