Submission #936838

#	Time	Username	Problem	Language	Result	Execution time	Memory
936838		Irate	Type Printer (IOI08_printer)	C++14	30 / 100	38 ms	53008 KiB

printer

#include<bits/stdc++.h>
using namespace std;
struct Trie{
    vector<vector<int>>trie;
    vector<bool>isWord;
    int nxt = 1, mxN = 5e5 + 5;
    string S = "";
    Trie(){
        trie.resize(26);
        for(int i = 0;i < 26;++i){
            trie[i].resize(mxN);
        }
        isWord.resize(mxN);
    }
    void Insert(string &s){
        int cur = 0;
        for(int i = 0;i < s.size();++i){
            if(trie[s[i] - 'a'][cur]){
                cur = trie[s[i] - 'a'][cur];
            }
            else{
                trie[s[i] - 'a'][cur] = nxt;
                cur = nxt;
                nxt++;
            }
        }
        isWord[cur] = 1;
    }
    void Traverse(int cur){
        if(isWord[cur]){
            S += 'P';
            S += '\n';
        }
        for(int i = 0;i < 26;++i){
            if(trie[i][cur]){
                S += char('a' + i);
                S += '\n';
                Traverse(trie[i][cur]);
            }
        }
        S += '-';
        S += '\n';
    }
};
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    Trie tr;
    int mx = 0;
    string longest = "";
    for(int i = 0;i < n;++i){
        string s;
        cin >> s;
        if(s.size() > mx){
            mx = s.size();
            longest = s;
        }
        tr.Insert(s);
    }
    for(int i = 0;i < 26;++i){
        if(longest[0] - 'a' == i || !tr.trie[i][0])continue;
        tr.S += char('a' + i);
        tr.S += '\n';
        tr.Traverse(tr.trie[i][0]);
    }
    tr.S += longest[0];
    tr.S += '\n';
    tr.Traverse(tr.trie[longest[0] - 'a'][0]);
    while(tr.S.back() == '-' || tr.S.back() == '\n')tr.S.pop_back();

    cout << (tr.S.size() + 1) / 2 << "\n" << tr.S;
}

Compilation message (stderr)

printer.cpp: In member function 'void Trie::Insert(std::string&)':
printer.cpp:17:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         for(int i = 0;i < s.size();++i){
      |                       ~~^~~~~~~~~~
printer.cpp: In function 'int main()':
printer.cpp:56:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   56 |         if(s.size() > mx){
      |            ~~~~~~~~~^~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 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