Submission #303090

#	Time	Username	Problem	Language	Result	Execution time	Memory
303090		FlashGamezzz	Type Printer (IOI08_printer)	C++17	50 / 100	1098 ms	111852 KiB

printer

#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <fstream>
#include <algorithm>
#include <string>
#include <utility>
#include <vector>
#include <queue>

using namespace std;

struct trie{
	long lets[26] = {};
	bool end = false;
	int len;
};

trie root = trie();
vector<trie> tries;
vector<char> ans;

void add(int c, int i, string s){
	int l = int(s[i])-97;
	if (tries[c].lets[l] == 0){
		tries.push_back(trie());
		tries[c].lets[l] = tries.size()-1;
	}
	if (i == s.length()-1){
		tries[tries[c].lets[l]].end = true;
		tries[tries[c].lets[l]].len = 0;
		return;
	}
	add(tries[c].lets[l], i+1, s);
	tries[c].len = max(tries[tries[c].lets[l]].len+1, tries[c].len);
}

void solve(int c){
	if (tries[c].end){
		ans.push_back('P');
	}
	vector< pair<int, int> > ls;
	for (int i = 0; i < 26; i++){
		if (tries[c].lets[i] != 0){
			ls.push_back(make_pair(tries[tries[c].lets[i]].len, i));
		}
	}
	sort(ls.begin(), ls.end());
	for (pair<int, int> a : ls){
		ans.push_back(char(a.second+97));
		solve(tries[c].lets[a.second]);
		ans.push_back('-');
	}
}

int main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	int n; cin >> n;
	tries.push_back(root);
	for (int i = 0; i < n; i++){
		string s; cin >> s;
		add(0, 0, s);
	}
	solve(0);
	long count = ans.size();
	while (ans[count-1] == '-'){
		count--;
	}
	cout << count << endl;
	for (int i = 0; i < count; i++){
		cout << ans[i] << endl;
	}
}

Compilation message (stderr)

printer.cpp: In function 'void add(int, int, std::string)':
printer.cpp:29:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  if (i == s.length()-1){
      |      ~~^~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10