Submission #351545

#	Time	Username	Problem	Language	Result	Execution time	Memory
351545		talant117408	Parrots (IOI11_parrots)	C++17	52 / 100	6 ms	1508 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"
#ifndef EVAL
#include "grader.cpp"
#endif
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;

#define precision(n) fixed << setprecision(n)
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define mp make_pair
#define eps (double)1e-9
#define PI 2*acos(0.0)
#define endl "\n"
#define sz(v) int((v).size())
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define do_not_disturb ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define OK cout << "OK" << endl;

void encode(int N, int M[]){
    vector <pii> v;
    for(int i = 0; i < N; i++){
        v.pb(mp(M[i], i));
    }
    sort(all(v));
    for(int i = 0; i < N; i++){
        int num = v[i].first, ind = v[i].second;
        for(int bit = 4; bit < 8; bit++){
            if(i&(1<<(bit-4))){
                ind |= (1<<bit);
            }
        }
        send(num); send(num); send(ind);
    }
}

decoder

#include "decoder.h"
#include "decoderlib.h"
#ifndef EVAL
#include "grader.cpp"
#endif
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;

#define precision(n) fixed << setprecision(n)
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define mp make_pair
#define eps (double)1e-9
#define PI 2*acos(0.0)
#define endl "\n"
#define sz(v) int((v).size())
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define do_not_disturb ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define OK cout << "OK" << endl;

void decode(int N, int L, int X[]){
    vector <int> cnt(256), nums;
    vector <pii> inds;
    for(int i = 0; i < L; i++){
        cnt[X[i]]++;
    }
    for(int i = 0; i < 256; i++){
        while(cnt[i] > 1){
            nums.pb(i);
            cnt[i] -= 2;
        }
        if(cnt[i]){
            int inc = 0, orig = 0;
            for(int bit = 0; bit < 4; bit++){
                if(i & (1<<bit)){
                    orig |= 1<<bit;
                }
                if(i & (1<<(bit+4))){
                    inc |= 1<<bit;
                }
            }
            inds.pb(mp(inc, orig));
        }
    }
    
    sort(all(nums));
    sort(all(inds));
    
    vector <pii> ans;
    for(int i = 0; i < N; i++){
        ans.pb(mp(inds[i].second, nums[i]));
    }
    
    sort(all(ans));
    for(auto to : ans) output(to.second);
}
/*
8
0 0 1 1 0 0 1 0

6 
1 255 13 26 49 216
*/

• Subtask 1: 17 / 17
• Subtask 2: 17 / 17
• Subtask 3: 18 / 18
• Subtask 4: 0 / 29
• Subtask 5: 0 / 19