Submission #748969

#	Time	Username	Problem	Language	Result	Execution time	Memory
748969		LucaLucaM	Type Printer (IOI08_printer)	C++17	20 / 100	75 ms	36592 KiB

printer

#include <bits/stdc++.h>

using namespace std;

/**
Initial costul e suma lungimilor.
Punem fiecare string in trie
Cand coboram in trie daca trb sa afisam, afisam
Cand urcam in trie, dam delete
**/

vector<char>ans;

struct node
{
    int cnt;
    bool term;
    node *f[26];
    node()
    {
        cnt = term = 0;
        memset(f, 0, sizeof(f));
    }
};

struct Trie
{
private:
    node *root = new node;
public:
    Trie(){}
    node *getRoot ()
    {
        return root;
    }
    void add (const string &s)
    {
        node *curr = root;
        for (const auto &ch : s)
        {
            if (curr -> f[ch - 'a'] == NULL)
                curr -> f[ch - 'a'] = new node;
            curr = curr -> f[ch - 'a'];
            curr -> cnt ++;
        }
        curr -> term = true;
    }
    void dfs (node *curr)
    {
        if (curr -> term == true)
            ans.push_back('P');
        vector<pair<int, int>>v;

        for (int i=0; i<26; i++)
        {
            if (curr -> f[i] != NULL)
                v.push_back({curr -> f[i] -> cnt, i});
        }

        sort(v.begin(), v.end());

        for (int i=0; i<(int)v.size(); i++)
        {
            ans.push_back(char(v[i].second + 'a'));
            dfs(curr -> f[v[i].second]);
            ans.push_back('-');
        }
    }
};

int main()
{
    int n;
    cin >> n;
    Trie T;
    for (int i=1; i<=n; i++)
    {
        string s;
        cin >> s;
        T.add(s);
    }

    T.dfs(T.getRoot());

    while (!ans.empty() && ans.back() == '-')
        ans.pop_back();

    cout << (int)ans.size() << '\n';
    for (const auto &ch : ans)
        cout << ch << '\n';

    return 0;
}

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