Submission #233700

#	Time	Username	Problem	Language	Result	Execution time	Memory
233700		Coroian_David	Parrots (IOI11_parrots)	C++11	0 / 100	2100 ms	129144 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"
#include <bits/stdc++.h>


using namespace std;


int n;
int OK = 0;

void aduan2(int a[], int b[])
{
   // cout << " ADUN " << a[0] << " " << b[0] << "\n";
   // cout << a[1] << " " << b[1] << " " << a[2] << " " << b[2] << "\n";

   /*if(a[0] == 0)
{
    memset(a, 0, sizeof(a));

    for(int i = 0; i <= 199; i ++)
        a[i] = 0;
}*/

    int i = 1;
    int t = 0;
    for(i = 1; i <= max(a[0], b[0]) || t; i ++)
    {
        //if(OK)
        //cout << " SUTNEM " << i << " " << a[i] << " " << b[i] << " " << t << "\n";

        a[i] += b[i] + t;
        t = 0;

        if(a[i] > 9)
        {
            t = a[i] / 10;
            a[i] %= 10;
        }
    }

//cout << a[0] << " " << i-1 << "\n";

    a[0] = i - 1;
}

bool cm2(int a[], int b[])
{
    if(a[0] > b[0])
        return 1;

    if(a[0] < b[0])
        return 0;

    for(int i = a[0]; i >= 1; i --)
    {
        if(a[i] != b[i])
            return (a[i] > b[i]);
    }

    return 1;
}

void copiv(int a[], int b[])
{
    for(int i = 1; i <= a[0]; i ++)
        a[i] = 0;

    a[0] = b[0];
    for(int i = 1; i <= b[0]; i ++)
        a[i] = b[i];
}

void scad(int a[], int b[])
{
    int t = 0;
    for(int i = 1; i <= b[0] || t; i ++)
    {
        a[i] = a[i] - t - b[i];
        t = 0;

        if(a[i] < 0)
        {
            t = 1;
            a[i] += 10;
        }
    }

    while(a[0] > 1 && a[a[0]] == 0)
        a[0] --;
}

struct nr
{
    int v[200];

    void operator +=(nr &x)
    {
        aduan2(v, x.v);
    }

    void operator -=(nr &x)
    {
        scad(v, x.v);
    }

    void operator =(nr &x)
    {
        copiv(v, x.v);
    }

    bool operator >= (nr &x)
    {
        return cm2(v, x.v);
    }
};

//#define 64 64


nr a, b;



nr p2;
nr cod;
nr s;

nr dp[255 + 1][64 * 5 + 1];
nr sumdp[255 + 1][64 * 5 + 1];


int okk;

void faDp()
{
    if(okk == 1)
        return;

  //  cout << "TINRA DP\n";
/*
    for(int i = 0; i <= 255; i ++)
    {
        for(int j = 0; j <= 320; j ++)
        {
            memset(dp[i][j].v, 0, sizeof(dp[i][j].v));
            memset(sumdp[i][j].v, 0, sizeof(sumdp[i][j].v));
        }
    }*/

    okk = 1;

    dp[0][0].v[0] = 1;
    dp[0][0].v[1] = 1;

    for(int i = 0; i < 255; i ++)
    {
        for(int j = 0; j <= 64 * 5; j ++)
        {
            //cout << i << " " << j << " " << dp[i][j].v[0] << "\n";

            if(i == 1 && j == 256)
                OK = 1;
            else
                OK = 0;

            if(j > 0)
            {
              //  cout << " ADUN LA SUMP " << i << " " << j << " PE " << i << " " << j - 1 << "\n";
                sumdp[i][j] += sumdp[i][j - 1];
            }
            OK = 0;

           // cout << " ADUN LA I J pe usmp i j \n";
            dp[i][j] += sumdp[i][j];

            if(dp[i][j].v[0] != 0)
            {
               // cout << " ADUN LA URM " << i + 1 << " " << j << " PE " << i << " " << j << "\n";
                sumdp[i + 1][j] += dp[i][j];

                if(j + 256 <= 64 * 5)
                {
                  //  cout << " AVEM " << j+256 << " SI SCADEM DIN " << i + 1 << " \n";

                    sumdp[i + 1][j + 256] -= dp[i][j];
                }
            }
        }
    }

   // cout << "GATRA DP\n";
}

/*
void afis(nr a)
{
    for(int i = a.v[0]; i >= 1; i --)
        cout << a.v[i];
    cout << "\n";
}*/

void encode(int N, int M[])
{
    //cout << "TINRA ECONDE\n";

    n = N;
    faDp();

    int k = 0;
    int a[700];
    for(int i = 0; i < N; i ++)
    {
        for(int j = 7; j >= 0; j --)
            a[++ k] = (((1 << j) & M[i]) != 0);
    }

    memset(p2.v, 0, sizeof(p2.v));
    memset(cod.v, 0, sizeof(cod.v));
    memset(s.v, 0, sizeof(s.v));

    p2.v[0] = 1;
    p2.v[1] = 1;

    cod.v[0] = 1;
    cod.v[1] = 0;

    for(int i = k; i >= 1; i --)
    {
        if(a[i] != 0)
            cod += p2;

        p2 += p2;
    }

    int sum = 5 * n;
    for(int i = 0; i <= 255; i ++)
    {
        int last = 0;
        for(int j = 0; j <= n * 5 && j <= sum; j ++)
        {
            //cout << " SUNTEM IN  " << i << "  CR " << j << "\n";

            if(cod >= s)
                last = j;

            else
            {
                s -= dp[255 - i - 1][sum - last];
                break;
            }

           // cout << " URM ADUNS \n";

            s += dp[255 - i - 1][sum - j];

           // cout << " GATA ADUN\n";
        }

       // cout << " PENTRU FRECVENTA LUI " << i << " ESTE " << last << "\n";

        sum -= last;
        for(int j = 1; j <= last; j ++)
            send(i);
    }

    //cout << "RAMAS == 0: " << sum << "\n";

    //afis(cod);
   // afis(s);
}

decoder

#include "decoder.h"
#include "decoderlib.h"
#include <bits/stdc++.h>


using namespace std;

int nn;
void aduna(int a[], int b[])
{
   // cout << " ADUN " << a[0] << " " << b[0] << "\n";
   // cout << a[1] << " " << b[1] << " " << a[2] << " " << b[2] << "\n";

    int i = 1;
    int t = 0;
    for(i = 1; i <= max(a[0], b[0]) || t; i ++)
    {
       // cout << " SUTNEM " << i << "\n";

        a[i] += b[i] + t;
        t = 0;

        if(a[i] > 9)
        {
            t = a[i] / 10;
            a[i] %= 10;
        }
    }

    //cout << a[0] << " " << i-1 << "\n";

    a[0] = i - 1;
}

bool cmp(int a[], int b[])
{
    if(a[0] > b[0])
        return 1;

    if(a[0] < b[0])
        return 0;

    for(int i = a[0]; i >= 1; i --)
    {
        if(a[i] != b[i])
            return (a[i] > b[i]);
    }

    return 1;
}

void copyV(int a[], int b[])
{
    for(int i = 1; i <= a[0]; i ++)
        a[i] = 0;

    a[0] = b[0];
    for(int i = 1; i <= b[0]; i ++)
        a[i] = b[i];
}

void scade(int a[], int b[])
{
    int t = 0;
    for(int i = 1; i <= b[0] || t; i ++)
    {
        a[i] = a[i] - t - b[i];
        t = 0;

        if(a[i] < 0)
        {
            t = 1;
            a[i] += 10;
        }
    }

    while(a[0] > 1 && a[a[0]] == 0)
        a[0] --;
}

struct nr
{
    int v[200];

    void operator +=(nr &x)
    {
        aduna(v, x.v);
    }

    void operator -=(nr &x)
    {
        scade(v, x.v);
    }

    void operator =(nr &x)
    {
        copyV(v, x.v);
    }

    bool operator >= (nr &x)
    {
        return cmp(v, x.v);
    }
};

//#define 64 64

nr dpp[255 + 1][64 * 5 + 1];
nr ssdpp[255 + 1][64 * 5 + 1];


nr p22;
nr codd;
nr ss;


int doneDp;

void getdpp()
{
    if(doneDp == 1)
        return;

    doneDp = 1;

    dpp[0][0].v[0] = 1;
    dpp[0][0].v[1] = 1;

    for(int i = 0; i < 255; i ++)
    {
        for(int j = 0; j <= nn * 5; j ++)
        {
            if(j > 0)
                ssdpp[i][j] += ssdpp[i][j - 1];

            dpp[i][j] += ssdpp[i][j];

            if(dpp[i][j].v[0] != 0)
            {
                ssdpp[i + 1][j] += dpp[i][j];

                if(j + 256 <= nn * 5)
                    ssdpp[i + 1][j + 256] -= dpp[i][j];
            }
        }
    }
}


nr p[600];
nr sp;
nr tmp;

int doneP;

void getPs()
{
    if(doneP == 1)
        return;

    doneP = 1;

    p[0].v[0] = 1;
    p[0].v[1] = 1;
    for(int i = 1; i <= 520; i ++)
    {
        p[i].v[0] = 1;
        p[i].v[1] = 0;
        p[i] += p[i - 1];
        p[i] += p[i - 1];
    }
}

void decode(int N, int L, int X[])
{
    //cout << " INTRA DECODe\n";

    nn = N;

    getdpp();

    int ap[256];
    for(int i = 0; i <= 255; i ++)
        ap[i] = 0;

    for(int i = 0; i < L; i ++)
        ap[X[i]] ++;

    memset(ss.v, 0, sizeof(ss.v));
    memset(sp.v, 0, sizeof(sp.v));
    memset(tmp.v, 0, sizeof(tmp.v));

    int sum = 5 * nn;
    for(int i = 0; i <= 255; i ++)
    {
       // if(ap[i] > 0)
          //  cout << i <<"APRAE " << ap[i] << "\n";

        int last = 0;
        for(int j = 0; j < ap[i]; j ++)
            ss += dpp[255 - i - 1][sum - j];

        sum -= ap[i];
    }

    //cout << " CODUL  ESTE : ";
   // afis(s);

    getPs();

    sp.v[0] = 1;
    sp.v[1] = 0;

    int a[600];
    memset(a, 0, sizeof(a));

    for(int i = nn * 8 - 1; i >= 0; i --)
    {
        tmp = sp;
        tmp += p[i];
        if(ss >= tmp)
        {
            sp += p[i];
            a[i] = 1;
        }
    }
//    cout << "\n";

    for(int i = nn * 8 - 1; i >= 0; i -= 8)
    {

        int nr = 0;
        for(int x = 7, j = 0; x >= 0; x --, j ++)
            nr += (a[i - j] << x);

        output(nr);
    }

    //cout << "GATA DECODE\n";
}

Compilation message (stderr)

decoder.cpp: In function 'void decode(int, int, int*)':
decoder.cpp:199:13: warning: unused variable 'last' [-Wunused-variable]
         int last = 0;
             ^~~~

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