Submission #985478

#	Time	Username	Problem	Language	Result	Execution time	Memory
985478		PagodePaiva	Type Printer (IOI08_printer)	C++17	100 / 100	179 ms	106440 KiB

printer

#include<bits/stdc++.h>

using namespace std;

int n;
int cnt;
vector <char> v;

struct Trie{
    Trie *child[26];
    int prof, tam, acab;
    Trie(){
        prof = -1;
        tam = 0;
        acab = 0;
        for(int i = 0;i < 26;i++) child[i] = NULL;
    }
    void add(string s, int pos){
        if(pos == s.size()){
            acab++;
            return;
        }
        if(!child[s[pos]-'a']) child[s[pos]-'a'] = new Trie();
        child[s[pos]-'a']->add(s, pos+1);
        if(prof == -1 or child[s[pos]-'a']->tam+1>child[prof]->tam){
            prof = s[pos]-'a';
            tam = child[s[pos]-'a']->tam+1;
        } 
        return;
    }
    void query(int typ){
        while(acab > 0){
            acab--;
            v.push_back('P');
            cnt++;
            if(cnt == n){
                cout << v.size() << '\n';
                for(auto x : v){
                    cout << x << '\n';
                }
                exit(0);
            }
        }
        bool aux = true;
        for(int i = 0;i < 26;i++){
            if(child[i]) aux = false;
        }
        if(aux) return;
        if(typ == 0){
            for(int i = 0;i < 26;i++){
                if(child[i] and i != prof){
                    v.push_back(i+'a');
                    child[i]->query(1);
                    v.push_back('-');
                }
            }
            if(prof == -1) return;
            v.push_back(prof+'a');
            child[prof]->query(0);
            return;
        }
        else{
            for(int i = 0;i < 26;i++){
                if(child[i]){
                    v.push_back(i+'a');
                    child[i]->query(1);
                    v.push_back('-');
                }
            }
        }
    }
} trie;

int main(){
    cin >> n;
    for(int i = 0;i < n;i++){
        string s;
        cin >> s;
        trie.add(s, 0);
    }
    trie.query(0);
    return 0;
}

Compilation message (stderr)

printer.cpp: In member function 'void Trie::add(std::string, int)':
printer.cpp:19:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |         if(pos == 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
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10