제출 #515823

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
515823		mhsi2005	Type Printer (IOI08_printer)	C++17	0 / 100	100 ms	20676 KiB

printer

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template <class T> using indexed_set = tree<T, null_type, less<T>,
	rb_tree_tag, tree_order_statistics_node_update>;

#define watch(x) cerr << "{" << (#x) << " = " << x << "}" << '\n';
#define watch2(x, y) cerr << "{" << (#x) << " = " << x << ", " << (#y) << " = " << y << "}" << '\n';
#define watch3(x, y, z) cerr << "{" << (#x) << " = " << x << ", " << (#y) << " = " << y << ", " << (#z) << " = " << z << "}" << '\n';
#define fast_io ios::sync_with_stdio(false); cin.tie(0), cout.tie(0);

const ll maxn = 2e5 + 10;

int n, t[maxn][30], nodes = 1;
set<int> en;

void add (string &s)
{
	int v = 0;
	for (int i = 0; i < s.size(); i++) {
		if (!t[v][s[i] - 'a']) t[v][s[i] - 'a'] = nodes++;
		v = t[v][s[i] - 'a'];
	}
	en.insert(v);
}

void dfs (int v, vector<int> lasts)
{
	if (en.count(v)) {
		cout << "P\n";
		en.erase(v);
	}
	int i = -1;
	for (int x = 0; x < 27; x++) {
		if (t[v][x]) {
			if (t[v][x] == lasts.back()) {i = x; continue;}
			cout << (char)('a' + x) << '\n';
			dfs(t[v][x], lasts);
		}
	}

	if (i != -1) {
		cout << (char)('a' + i) << '\n';
		lasts.pop_back();
		dfs(t[v][i], lasts);
	}
	if (en.size())
		cout << "-\n";
}

pair<string, vector<int>> dfs2 (int v, string s, vector<int> ss)
{
	int degree = 0;
	for (int x = 0; x < 27; x++) {
		if (t[v][x]) degree++;
	}

	if (degree > 1) s = "";

	string res = s;
	vector<int> res2 = ss;
	for (int x = 0; x < 27; x++) {
		if (t[v][x]) {
			s += (char)('a' + x);
			ss.push_back(t[v][x]);
			auto p = dfs2(t[v][x], s, ss);
			s.pop_back();
			ss.pop_back();
			if (res.size() < p.first.size()) {
				res = p.first;
				res2 = p.second;
			}
		}
	}

	return {res, res2};
}

int main ()
{
	cin >> n;

	for (int i = 0; i < n; i++) {
		string s;
		cin >> s;
		add(s);
	}

	auto p = dfs2(0, "", {});
	reverse(p.second.begin(), p.second.end());
	dfs(0, p.second);

	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

printer.cpp: In function 'void add(std::string&)':
printer.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for (int i = 0; i < s.size(); i++) {
      |                  ~~^~~~~~~~~~

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