Submission #1093874

#	Time	Username	Problem	Language	Result	Execution time	Memory
1093874		vtnoo	Type Printer (IOI08_printer)	C++17	30 / 100	27 ms	18896 KiB

printer

#include<bits/stdc++.h>
//SHORTEST CODE:::::
#define ll long long
#define ull unsigned long long
#define vi vector<int> 
#define vll vector<long long> 
#define PB push_back
#define snd second
#define fst first
#define ii pair<int, int>
#define MP make_pair
#define forn(i,n) for(int i=0;i<n;++i)
#define forsn(i,s,n) for(int i=s; i<n; ++i)
#define SIZE(c) int((c).size())
#define all(x) x.begin(), x.end()
#define endl '\n'
#define yes cout<<"Yes\n"
#define no cout<<"No\n"
#define imp(x) {for(auto __:x)cout<<__<<" "; cout<<"\n";}
//DEBUG:::::
#define DBG(x) cerr << #x << " = " << (x) << endl
#define RAYA cerr << "===============================" << endl

using namespace std;
     
inline void FIO() {ios_base::sync_with_stdio(false); cin.tie(NULL);}

int dx[4]={0, 0, 1, -1};
int dy[4]={1, -1, 0, 0};
/*Cosas a tener en cuenta:
-Mantenlo Simple
-Leer TODO el enunciado*/

const int mxn=1e5*2+10, M=1e9+7;
/*ll fact[mxn];

ll pw(ll a, ll b){
	if(b==0)return 1;
	if(b%2==0)return pw(a*a%M,b/2)%M;
	else return (a*pw(a*a%M,b/2))%M;
}

ll C(ll n, ll k){
	if(n<k)return 0LL;
	return (fact[n]*pw((fact[k]*fact[n-k])%M, M-2))%M;
}*/

const int maxnodos=500001;
int trie[maxnodos][26];
bool fin[maxnodos];
bool distances[maxnodos];
int nxt=2;
vector<char> res;

void add(string s, int raiz, string x){
	int nodo=raiz;
	for(int i=0; i<SIZE(s); i++){
		int ch=s[i]-'a';
		if(trie[nodo][ch]==0)trie[nodo][ch]=nxt++;
		if(s==x){
			distances[trie[nodo][ch]]=1;
		}
		nodo=trie[nodo][ch];
	}
	fin[nodo]=true;
}

void dfs(int nodo){
	if(fin[nodo]){
		res.PB('P');
	}
	for(int i=0; i<26; i++){
		if(trie[nodo][i]==0)continue;
		if(nodo==1 and distances[trie[nodo][i]]){
			for(int j=0; j<26; j++){
				if(!distances[trie[nodo][j]] and trie[nodo][j]){
					res.PB(j+'a');
					dfs(trie[nodo][j]);
					res.PB('-');
				}
			}
			res.PB(i+'a');
			dfs(trie[nodo][i]);
			res.PB('-');
		}
		else if(nodo!=1){
			res.PB(i+'a');
			dfs(trie[nodo][i]);
			res.PB('-');
		}
	}
}

int main(){FIO();
	int n;cin>>n;
	vector<string> v(n); 
	pair<int, string> s;
	forn(i,n){
		cin>>v[i];
		s=max(s, {SIZE(v[i]), v[i]});
	}
	forn(i,n){
		add(v[i], 1, s.snd);
	}
	dfs(1);
	while(res.back()=='-')res.pop_back();
	cout<<SIZE(res)<<endl;
	forn(i,SIZE(res)){
		cout<<res[i]<<endl;
	}
}

• 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