Submission #1046527

#	Time	Username	Problem	Language	Result	Execution time	Memory
1046527		oscar1f	Parrots (IOI11_parrots)	C++17	0 / 100	1 ms	1316 KiB

encoder

#include<bits/stdc++.h>
#include "encoder.h"
#include "encoderlib.h"
using namespace std;

void encode(int N, int M[]) {
    vector<int> listeAjout,listeRetrait;
    int nbVal=N,NB_BITS=8;
    int val;
    for (int i=0;i<nbVal;i++) {
        val=M[i];
        if (i<32) {
            for (int j=0;j<NB_BITS;j++) {
                if (val%2==0) {
                    listeRetrait.push_back(i*NB_BITS+j);
                }
                else {
                    listeAjout.push_back(i*NB_BITS+j);
                }
                val/=2;
            }
        }
        else {
            for (int j=0;j<NB_BITS;j++) {
                if (val%2==0) {
                    listeRetrait.push_back((i-32)*NB_BITS+j);
                    listeRetrait.push_back((i-32)*NB_BITS+j);
                }
                else {
                    listeAjout.push_back((i-32)*NB_BITS+j);
                    listeAjout.push_back((i-32)*NB_BITS+j);
                }
                val/=2;
            }
        }
    }
    if ((int)listeAjout.size()<=(int)listeRetrait.size()+4 or 1==0) {
        for (int i:listeAjout) {
            send(i);
        }
    }
    else {
        for (int i:listeRetrait) {
            send(i);
        }
        for (int i=0;i<4;i++) {
            send(0);
        }        
    }
}

decoder

#include<bits/stdc++.h>
#include "decoder.h"
#include "decoderlib.h"
using namespace std;

const int TAILLE_MAX=256;
int nbOccu[TAILLE_MAX];
int rep[TAILLE_MAX];

void decode(int N, int L, int X[]) {
    for (int i=0;i<TAILLE_MAX;i++) {
        rep[0]=0;
        nbOccu[0]=0;
    }
    int nbVal=N,nbCode=L,NB_BITS=8;
    for (int i=0;i<nbCode;i++) {
        nbOccu[X[i]]++;
    }
    if (nbOccu[0]<=3) {
        for (int i=0;i<TAILLE_MAX;i++) {
            if (nbOccu[i]%2==1) {
                rep[i/NB_BITS]+=(1<<(i%NB_BITS));
            }
            if (nbOccu[i]/2==1) {
                rep[i/NB_BITS+32]+=(1<<(i%NB_BITS));
            }
        }
        for (int i=0;i<nbVal;i++) {
            output(rep[i]);
        }
    }
    else {
        nbOccu[0]-=4;
        for (int i=0;i<TAILLE_MAX;i++) {
            if (nbOccu[i]%2==1) {
                rep[i/NB_BITS]+=(1<<(i%NB_BITS));
            }
            if (nbOccu[i]/2==1) {
                rep[i/NB_BITS+32]+=(1<<(i%NB_BITS));
            }
        }
        for (int i=0;i<nbVal;i++) {
            output(TAILLE_MAX-1-rep[i]);
        }
    }
}

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