제출 #1193962

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1193962		steveonalex	저장 (Saveit) (IOI10_saveit)	C++20	100 / 100	49 ms	5952 KiB

encoder

/*

 ________  ___  ________  ________          ________   ___  ________  ________  ________     
    |\   ____\|\  \|\   ____\|\   __  \        |\   ___  \|\  \|\   ____\|\   ____\|\   __  \    
    \ \  \___|\ \  \ \  \___|\ \  \|\  \       \ \  \\ \  \ \  \ \  \___|\ \  \___|\ \  \|\  \   
     \ \  \  __\ \  \ \  \  __\ \   __  \       \ \  \\ \  \ \  \ \  \  __\ \  \  __\ \   __  \  
      \ \  \|\  \ \  \ \  \|\  \ \  \ \  \       \ \  \\ \  \ \  \ \  \|\  \ \  \|\  \ \  \ \  \ 
       \ \_______\ \__\ \_______\ \__\ \__\       \ \__\\ \__\ \__\ \_______\ \_______\ \__\ \__\
        \|_______|\|__|\|_______|\|__|\|__|        \|__| \|__|\|__|\|_______|\|_______|\|__|\|__|
                                                                                                 
                                                                                             
                                                                                             
     ________  ________  ________  ________  ___  ___  ________ _________  ___  ________  ________      
|\   __  \|\   __  \|\   __  \|\   ___ \|\  \|\  \|\   ____\\___   ___\\  \|\   __  \|\   ___  \    
\ \  \|\  \ \  \|\  \ \  \|\  \ \  \_|\ \ \  \\\  \ \  \___\|___ \  \_\ \  \ \  \|\  \ \  \\ \  \   
 \ \   ____\ \   _  _\ \  \\\  \ \  \ \\ \ \  \\\  \ \  \       \ \  \ \ \  \ \  \\\  \ \  \\ \  \  
  \ \  \___|\ \  \\  \\ \  \\\  \ \  \_\\ \ \  \\\  \ \  \____   \ \  \ \ \  \ \  \\\  \ \  \\ \  \ 
   \ \__\    \ \__\\ _\\ \_______\ \_______\ \_______\ \_______\  \ \__\ \ \__\ \_______\ \__\\ \__\
    \|__|     \|__|\|__|\|_______|\|_______|\|_______|\|_______|   \|__|  \|__|\|_______|\|__| \|__|
                                                                                                    
                                                                                                    
    Written by: giga nigga                                                                               

*/

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll gcd(ll a, ll b){return __gcd(a, b);}
ll lcm(ll a, ll b){return a / gcd(a, b) * b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ull mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
// mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
mt19937_64 rng(1);
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
double rngesus_d(double l, double r){
    double wow = (double) ((ull) rng()) / ((ull)(0-1));
    return wow * (r - l) + l;
}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

#include "grader.h"
#include "encoder.h"


void encode(int n, int h, int m, int *U, int *V){
    vector<vector<int>> graph(n);
    for(int i = 0; i < m; ++i){
        graph[U[i]].push_back(V[i]);
        graph[V[i]].push_back(U[i]);
    }

    int dih[h][n];
    vector<int> parent(n);
    for(int i = 0; i < h; ++i){
        vector<int> dis(n, 1023);
        dis[i] = 0;
        deque<int> q; q.push_back(i);

        while(q.size()){
            int u = q.front(); q.pop_front();
            for(int v: graph[u]) if (minimize(dis[v], dis[u] + 1)){
                q.push_back(v);
                if (i == 0) parent[v] = u;
            }
        }

        for(int j = 0; j < n; ++j) dih[i][j] = dis[j];
    }

    for(int j = 1; j < n; ++j){
        for(int k = 0; k < 10; ++k) encode_bit(GETBIT(parent[j], k));
    }

    for(int i = 1; i < n; ++i){
        ll po = 1, ans = 0;
        for(int j = 0; j < h; ++j){
            int cur = 0;
            if (dih[j][parent[i]] == dih[j][i]) cur = 1;
            else if (dih[j][parent[i]] > dih[j][i]) cur = 2;
            ans += po * cur;
            po *= 3;
        }
        for(int k = 0; k < 60; ++k) encode_bit(GETBIT(ans, k));
    }
}

decoder

/*

 ________  ___  ________  ________          ________   ___  ________  ________  ________     
    |\   ____\|\  \|\   ____\|\   __  \        |\   ___  \|\  \|\   ____\|\   ____\|\   __  \    
    \ \  \___|\ \  \ \  \___|\ \  \|\  \       \ \  \\ \  \ \  \ \  \___|\ \  \___|\ \  \|\  \   
     \ \  \  __\ \  \ \  \  __\ \   __  \       \ \  \\ \  \ \  \ \  \  __\ \  \  __\ \   __  \  
      \ \  \|\  \ \  \ \  \|\  \ \  \ \  \       \ \  \\ \  \ \  \ \  \|\  \ \  \|\  \ \  \ \  \ 
       \ \_______\ \__\ \_______\ \__\ \__\       \ \__\\ \__\ \__\ \_______\ \_______\ \__\ \__\
        \|_______|\|__|\|_______|\|__|\|__|        \|__| \|__|\|__|\|_______|\|_______|\|__|\|__|
                                                                                                 
                                                                                             
                                                                                             
     ________  ________  ________  ________  ___  ___  ________ _________  ___  ________  ________      
|\   __  \|\   __  \|\   __  \|\   ___ \|\  \|\  \|\   ____\\___   ___\\  \|\   __  \|\   ___  \    
\ \  \|\  \ \  \|\  \ \  \|\  \ \  \_|\ \ \  \\\  \ \  \___\|___ \  \_\ \  \ \  \|\  \ \  \\ \  \   
 \ \   ____\ \   _  _\ \  \\\  \ \  \ \\ \ \  \\\  \ \  \       \ \  \ \ \  \ \  \\\  \ \  \\ \  \  
  \ \  \___|\ \  \\  \\ \  \\\  \ \  \_\\ \ \  \\\  \ \  \____   \ \  \ \ \  \ \  \\\  \ \  \\ \  \ 
   \ \__\    \ \__\\ _\\ \_______\ \_______\ \_______\ \_______\  \ \__\ \ \__\ \_______\ \__\\ \__\
    \|__|     \|__|\|__|\|_______|\|_______|\|_______|\|_______|   \|__|  \|__|\|_______|\|__| \|__|
                                                                                                    
                                                                                                    
    Written by: giga nigga                                                                               

*/


// #include "largest.h"
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll gcd(ll a, ll b){return __gcd(a, b);}
ll lcm(ll a, ll b){return a / gcd(a, b) * b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ull mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
// mt19937_64 rng(1);
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
double rngesus_d(double l, double r){
    double wow = (double) ((ull) rng()) / ((ull)(0-1));
    return wow * (r - l) + l;
}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }



#include "grader.h"
#include "decoder.h"

void dfs(int u, vector<vector<int>> &graph, vector<int> &ans){
    ans.push_back(u);
    for(int v: graph[u]) dfs(v, graph, ans);
}

vector<int> construct_dfs_order(int n, vector<int> parent){
    vector<vector<int>> graph(n);
    for(int i = 1; i < n; ++i) graph[parent[i]].push_back(i);

    vector<int> ans;
    dfs(0, graph, ans);
    return ans;
}

void decode(int n, int h){
    vector<int> parent(n);
    for(int j = 1; j < n; ++j){
        for(int k = 0; k < 10; ++k) parent[j] += decode_bit() * MASK(k);
    }

    vector<int> order = construct_dfs_order(n, parent);
    vector<ll> state(n);
    for(int j = 1; j < n; ++j){
        for(int k = 0; k < 60; ++k) state[j] += MASK(k) * decode_bit();
    }

    int ans[h][n]; memset(ans, 0, sizeof ans);
    for(int i: order) if (i != 0){
        for(int j = 0; j < h; ++j){
            int cur = state[i] % 3;
            state[i] /= 3;
            if (cur == 0) ans[j][i] = ans[j][parent[i]] + 1;
            else if (cur == 1) ans[j][i] = ans[j][parent[i]];
            else ans[j][i] = ans[j][parent[i]] - 1;
        }
    }

    for(int j = 0; j < h; ++j){
        int mi = 0;
        for(int i = 0; i < n; ++i) minimize(mi, ans[j][i]);
        for(int i = 0; i < n; ++i) ans[j][i] -= mi;

        for(int i = 0; i < n; ++i) hops(j, i, ans[j][i]);
    }
}

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 25 / 25