Submission #1093980

#	Time	Username	Problem	Language	Result	Execution time	Memory
1093980		clementine	Type Printer (IOI08_printer)	C++17	50 / 100	129 ms	72424 KiB

printer

#include<bits/stdc++.h>
using namespace std;

const int k = 26;
struct Node
{
    bool isend = false;
    int next[k];
    bool big[k];
    Node(){
        fill(begin(next), end(next), -1);
    }
};

vector<Node> trie;
void addstring(string s)
{
    int v = 0;
    for(auto ch : s)
    {
        int c = ch - 'a';
        if(trie[v].next[c] == -1)
        {
            trie[v].next[c] = trie.size();
            trie.emplace_back();
        }
        v = trie[v].next[c];  
        //cout << v << '\n';
    }
    trie[v].isend = true;
}

void addbig(string s)
{
    int v = 0;
    for(auto ch : s)
    {
        int c = ch - 'a';
        if(trie[v].next[c] == -1)
        {
            trie[v].next[c] = trie.size();
            trie.emplace_back();
        }
        trie[v].big[c] = true;
        v = trie[v].next[c];  
        //cout << v << '\n';
    }
    trie[v].isend = true;
}
vector<char> ans;

void dfs(int u)
{
    //cout << "this is u : " << u << "\n";
    if(trie[u].isend)
    {
        ans.push_back('P');
        //cout << " one \n";
    }
    for(int i = 0; i < k; i ++)
    {
        if(trie[u].next[i] != -1 && !trie[u].big[i])
        {
            ans.push_back('a' + i);
            //cout << "two \n";
            dfs(trie[u].next[i]);
            ans.push_back('-');
        }
    }
    for(int i = 0; i < k; i ++)
    {
        if(trie[u].next[i] != -1 && trie[u].big[i])
        {
            ans.push_back('a' + i);
            //cout << "foutr \n";
            dfs(trie[u].next[i]);
            ans.push_back('-');
        }
    }

    
}
int main()
{
    int n;
    cin >> n;
    vector<string> s;
    trie.emplace_back();
    for(int i = 0; i < n; i ++)
    {
        string a;
        cin >> a;
        s.push_back(a);
    }
    sort(s.begin(), s.end(), [](string a, string b){return a.length() < b.length();});
    //cout << s[n-1] <<  "!!!!! \n";
    for(int i = 0; i < n-1; i ++)
    {
        addstring(s[i]);
    }
    addbig(s[n-1]);
    dfs(0);
    for(int i = ans.size() - 1; ans[i] != 'P'; i --)
    {
        ans.pop_back();
    }
    cout << ans.size() << '\n';
    for(int i = 0; i < ans.size() ; i ++)
    {
        cout << ans[i] << '\n';
    }

}

Compilation message (stderr)

printer.cpp: In function 'int main()':
printer.cpp:108:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  108 |     for(int i = 0; i < ans.size() ; i ++)
      |                    ~~^~~~~~~~~~~~

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