Submission #965367

#	Time	Username	Problem	Language	Result	Execution time	Memory
965367		dosts	Type Printer (IOI08_printer)	C++17	100 / 100	177 ms	96976 KiB

printer

//Dost SEFEROĞLU
#pragma GCC optimize("O3,unroll-loops,Ofast")
#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define sp << " " << 
#define vi vector<int>
const int N = 5e5+100,inf = 1e9,MOD = 1e9+7;


string S;
int origsize;
vector<char> instructions;

struct Trie {
    unordered_map<char,Trie*> children;
    int ultimo = 0,star = 0,deepshit = 0;
    void insert(string* ss) {
        ultimo++;
        if (ss->empty()) {
            star++;
            deepshit = max(deepshit,origsize);
            return;
        }
        char cc = ss->back();
        ss->pop_back();
        if (!children.count(cc)) children[cc] = new Trie;
        children[cc]->insert(ss);
        deepshit = max(deepshit,children[cc]->deepshit);
    }

    void dfs() {
        while (star) {
            star--;
            instructions.push_back('P');
        }
        vector<pair<int,char>> childs;
        for (auto it : children) childs.push_back({it.ss->deepshit,it.ff});
        sort(childs.begin(),childs.end());
        for (auto it : childs) {
            instructions.push_back(it.ss);
            children[it.ss]->dfs();
        }
        instructions.push_back('-');
    }

} *root = new Trie;


void solve() {
    int n;
    cin >> n;
    for (int i=1;i<=n;i++) {
        cin >> S;
        origsize = S.size();
        reverse(S.begin(),S.end());
        root->insert(&S);
    }
    root->dfs();
    while (instructions.back() == '-') instructions.pop_back(); 
    cout << instructions.size() << '\n';
    for (auto it : instructions) cout << it << '\n'; 
}
                 
                             
signed main() { 
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    #ifdef Dodi
        freopen("in.txt","r",stdin);
        freopen("out.txt","w",stdout);
    #endif
    int t = 1;
    //cin >> t; 
    while (t --> 0) solve();
}

• 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