Submission #850698

#	Time	Username	Problem	Language	Result	Execution time	Memory
850698		abcvuitunggio	Type Printer (IOI08_printer)	C++17	100 / 100	71 ms	50776 KiB

printer

#include <bits/stdc++.h>
using namespace std;
int n,id,ke[500001][26],d[500001],w[500001];
string s,t;
void add(){
    int cur=0;
    for (char c:s){
        if (!ke[cur][c-'a']){
            ke[cur][c-'a']=++id;
            d[id]=d[cur]+1;
        }
        cur=ke[cur][c-'a'];
    }
    w[cur]=1;
}
void dfs(int u, int b){
    for (int i=0;i<26;i++)
        if (!(b&&i==t[d[u]]-'a')&&ke[u][i]){
            cout << (char)(i+'a') << '\n';
            dfs(ke[u][i],0);
        }
    if (w[u])
        cout << "P\n";
    if (b){
        if (d[u]!=t.length()-1){
            cout << t[d[u]] << '\n';
            dfs(ke[u][t[d[u]]-'a'],1);
        }
    }
    else
        cout << "-\n";
}
int main(){
    ios_base::sync_with_stdio(NULL);cin.tie(nullptr);
    cin >> n;
    for (int i=0;i<n;i++){
        cin >> s;
        add();
        if (t.length()<s.length())
            t=s;
    }
    cout << id*2-t.length()+n << '\n';
    t+=' ';
    dfs(0,1);
}

Compilation message (stderr)

printer.cpp: In function 'void dfs(int, int)':
printer.cpp:25:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         if (d[u]!=t.length()-1){
      |             ~~~~^~~~~~~~~~~~~~

• 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