Submission #499087

#	Time	Username	Problem	Language	Result	Execution time	Memory
499087		Nartifact	Type Printer (IOI08_printer)	C++14	100 / 100	141 ms	99628 KiB

printer

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

#define int long long
#define rep(i,b) for (int i=0;i<b;++i)
#define forinc(i,a,b) for(int i=a;i<=b;++i)
#define fordec(i,a,b) for(int i=a;i>=b;--i)
#define pb push_back
#define eb emplace_back
#define pii pair <int,int>
#define piii pair <int, pii>
#define fi first
#define se second
#define two(x) (1ll << x)
#define getbit(i, x) (x >> i & 1ll)
#define onbit(i, x) (x|(1ll << i))
#define offbit(i, x) (x & ~(1ll << i))
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()

const int N = 25025;
int n;
string sta;
vector <char> ans;

struct node
{
    node* child[26];
    bool eos, ok;
    node () {
        forinc(i,0,25) child[i] = nullptr;
        eos = ok = 0;
    }
};

struct Trie
{
    node* root;
    Trie () {root = new node();}

    void add (const string& s, const bool& type) {
        node* tmp = root;
        for (char c : s) {
            int pos = c - 'a';
            if(!tmp->child[pos]) tmp->child[pos] = new node();
            tmp = tmp->child[pos];
            tmp->ok = type;
        }
        tmp->eos = 1;
        tmp->ok = type;
    }

    void solve (node* tmp) {
        if(tmp->eos) ans.eb('P');
        int check = -1;
        forinc(i,0,25) if(tmp->child[i]) {
            node* nxt = tmp->child[i];
            if(nxt->ok) check = i;
            else {
                ans.eb(i + 'a');
                solve(nxt);
                ans.eb('-');
            }
        }
        if(check != -1){
            ans.eb(check + 'a');
            solve(tmp->child[check]);
        }
    }

} trie;

void read ()
{
    cin >> n;
    string s;
    forinc(i,1,n) {
        cin >> s;
        trie.add(s, 0);
        if(s.size() > sta.size()) sta = s;
    }
    trie.add(sta, 1);
    trie.solve(trie.root);
    cout << ans.size() << '\n';
    for (char i : ans) cout << i << '\n';
}

main ()
{
	#define task ""
	cin.tie(0) -> sync_with_stdio(0);
	if(fopen (task ".inp", "r")) {
		freopen (task ".inp", "r", stdin);
		freopen (task ".out", "w", stdout);
	}
    read();
	return 0;
}

Compilation message (stderr)

printer.cpp:89:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   89 | main ()
      | ^~~~
printer.cpp: In function 'int main()':
printer.cpp:94:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |   freopen (task ".inp", "r", stdin);
      |   ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
printer.cpp:95:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   95 |   freopen (task ".out", "w", stdout);
      |   ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• 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