이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
char ans[5000000];
struct arbol{
    char letra;
    int palabra_mayor;
    bool fin_palabra=false;
    int hijos[28];
};
int aux,desocupado=1;
arbol raices[500002];
int dfs(int posicion){
    int tam=0;
    for(int i=0;i<28;i++){
        if(raices[posicion].hijos[i]!=0){
            tam=max(dfs(raices[posicion].hijos[i]),tam);
        }
    }
    tam++;
    raices[posicion].palabra_mayor=tam;
    return tam;
}
void res(int pos, bool rama){
    if(pos!=0) {
            ans[aux]=raices[pos].letra;
            aux++;
    }
    if(raices[pos].fin_palabra==true) {
            ans[aux]='P';
            aux++;
    }
    int m=-1;
    for(int i=0;i<28;i++){
        if(raices[pos].hijos[i]!=0){
            if(raices[raices[pos].hijos[i]].palabra_mayor==raices[pos].palabra_mayor-1&&m==-1) m=i;
            else res(raices[pos].hijos[i],false);
        }
    }
    if(pos==0&&m!=-1) res(raices[pos].hijos[m],true);
    else if(m!=-1) res(raices[pos].hijos[m],rama);
    if(pos!=0&&rama==false) {
            ans[aux]='-';
            aux++;
    }
}
int main()
{
    ios_base::sync_with_stdio();cin.tie(0);
    int n;
    cin>>n;
    string palabra;
    for(int i=0;i<n;i++){
        cin>>palabra;
        aux=0;
        for(char l:palabra){
            if(raices[aux].hijos[l-'a']!=0) aux=raices[aux].hijos[l-'a'];
            else{
                raices[aux].hijos[l-'a']=desocupado;
                aux=desocupado;
                raices[aux].letra=l;
                desocupado++;
            }
        }
        raices[aux].fin_palabra=true;
    }
    dfs(0);
    aux=0;
    res(0,false);
    cout<<aux<<endl;
    for(int i=0;i<aux;i++){
        cout<<ans[i]<<endl;
    }
    return 0;
}
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... |