Submission #885956

#	Time	Username	Problem	Language	Result	Execution time	Memory
885956		chautanphat	Type Printer (IOI08_printer)	C++14	100 / 100	105 ms	54628 KiB

printer

#include <bits/stdc++.h>

using namespace std;

const int maxn = 2e6;
int n, t, trie[maxn][26], exist[maxn], dp[maxn];
string s, ans;

void insert(string s)
{
    int cur = 0;
    for (int i = 0; i < (int)s.size(); i++)
    {
        int id = s[i]-'a';
        if (!trie[cur][id]) trie[cur][id] = ++t;
        cur = trie[cur][id];
    }
    exist[cur] = 1;
}

void precal(int u)
{
    bool ok = 0;
    for (int id = 0; id < 26; id++)
    {
        if (!trie[u][id]) continue;
        ok = 1;
        precal(trie[u][id]);
        dp[u] = max(dp[u], dp[trie[u][id]]+1);
    }
    if (!ok) dp[u] = 1;
}

void dfs(int u)
{
    if (exist[u])
    {
        ans += "P";
        n--;
    }
    vector<pair<int, int>> v;
    for (int id = 0; id < 26; id++)
        if (trie[u][id]) v.push_back({dp[trie[u][id]], id});
    sort(v.begin(), v.end());
    for (int i = 0; i < (int)v.size(); i++)
    {
        int id = v[i].second;
        if (!trie[u][id]) continue;
        s += 'a'+id;
        ans += 'a'+id;
        dfs(trie[u][id]);
    }
    if (u == 0) return;
    s.pop_back();
    if (n) ans += "-";
}

int main()
{    
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n;
    for (int i = 0; i < n; i++)
    {
        string s;
        cin >> s;
        insert(s);
    }

    precal(0);
    dfs(0);

    cout << (int)ans.size() << '\n';
  	for (int i = 0; i < (int)ans.size(); i++) cout << ans[i] << '\n';
    return 0;
}

• 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