Submission #248533

#	Time	Username	Problem	Language	Result	Execution time	Memory
248533		A02	Parrots (IOI11_parrots)	C++14	17 / 100	4 ms	1792 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <set>
#include <utility>
#include <string>

using namespace std;

void encode(int N, int M[])
{

    vector<bool> message;

    for(int i = 0; i < N; i++){


        for (int j = 7; j >= 0; j--){
            message.push_back((M[i] & (1 << j)));
        }

    }

//    for (int i = 0; i < N; i++){
//        cout << M[i] << ' ';
//    }
//    cout << endl;
//
//    for (int i = 0; i < message.size(); i++){
//        cout << message[i] << ' ';;
//    }
//    cout << endl;

    for (int i = 0; i < 2 * N; i++){

        int to_send = 8 * message[4 * i] + 4 * message[4 * i + 1] + 2 * message[4 * i + 2] + message[4 * i + 3];
        for (int k = 0; k < 4; k++){
            if (to_send >= 3){
                to_send -= 3;
                send(4 * i + 3);
            } else {
                if (to_send == 2){
                    to_send -=2;
                    send(4 * i + 2);
                } else{
                if (to_send == 1){
                    to_send -=1;
                    send(4 * i + 1);
                } else{
                    send(4 * i);
                    }
                }

            }
        }

    }

}

decoder

#include "decoder.h"
#include "decoderlib.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <set>
#include <utility>

using namespace std;

//bool pairc

void decode(int N, int L, int X[])
{

    vector<pair<int, int> > recieved;
    vector<int> full_recieved;

    for(int i=0; i<L; i++) {
        recieved.push_back(make_pair(X[i] >> 2, X[i] & 3));
    }

    sort(recieved.begin(), recieved.end());

    for (int i = 0; i < recieved.size(); i++){
        //cout << recieved[i].first << " : " << recieved[i].second << endl;
        full_recieved.push_back(recieved[i].second);
        //cout << 'r' << recieved[i].second << endl;
    }


    for (int i = 0; i < N; i++){

        int s1 = full_recieved[8 * i];
        int s2 = full_recieved[8 * i + 1];
        int s3 = full_recieved[8 * i + 2];
        int s4 = full_recieved[8 * i + 3];

        int t1 = full_recieved[8 * i + 4];
        int t2 = full_recieved[8 * i + 5];
        int t3 = full_recieved[8 * i + 6];
        int t4 = full_recieved[8 * i + 7];

        output(((s1 + s2 + s3 + s4) << 4) + (t1 + t2 + t3 + t4));

    }
}

Compilation message (stderr)

decoder.cpp: In function 'void decode(int, int, int*)':
decoder.cpp:26:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < recieved.size(); i++){
                     ~~^~~~~~~~~~~~~~~~~

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