Submission #231077

#	Time	Username	Problem	Language	Result	Execution time	Memory
231077		Coroian_David	Parrots (IOI11_parrots)	C++11	0 / 100	2100 ms	61432 KiB

encoder

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

#define MAX_N 64

using namespace std;

int n;

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];

    /*
    nr operator + (nr &x)
    {
        aduna(v, x.v);

        return *v;
    }*/

    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);
    }
/*
    operator [] (nr & x)
    {
        return *x;
    }*/
/*
    nr operator = (nr &x)
    {
        //*v** = *(x.v);

        return x;
    }*/
};

//#define MAX_N 64

nr dp[255 + 1][MAX_N * 5 + 1];

nr a, b;

nr p2;
nr cod;
nr s;

void getDp()
{
    dp[0][0].v[0] = 1;
    dp[0][0].v[1] = 1;

    for(int i = 0; i < 255; i ++)
    {
        for(int j = 0; j <= n * 5; j ++)
        {
            if(dp[i][j].v[0] != 0)
            {
                for(int h = 0; h <= 255; h ++)
                {
                    if(j + h <= n * 5)
                        dp[i + 1][j + h] += dp[i][j];
                }
            }
        }
    }
}
/*
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[])
{
    n = N;
    getDp();

    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);
    }

    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 == 1)
                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 <bits/stdc++.h>
#include "decoder.h"
#include "decoderlib.h"

#define MAX_N 64

using namespace std;

int n;

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];

    /*
    nr operator + (nr &x)
    {
        aduna(v, x.v);

        return *v;
    }*/

    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);
    }
/*
    operator [] (nr & x)
    {
        return *x;
    }*/
/*
    nr operator = (nr &x)
    {
        //*v** = *(x.v);

        return x;
    }*/
};

//#define MAX_N 64

nr dp[255 + 1][MAX_N * 5 + 1];

void getDp()
{
    dp[0][0].v[0] = 1;
    dp[0][0].v[1] = 1;

    for(int i = 0; i < 255; i ++)
    {
        for(int j = 0; j <= n * 5; j ++)
        {
            if(dp[i][j].v[0] != 0)
            {
                for(int h = 0; h <= 255; h ++)
                {
                    if(j + h <= n * 5)
                        dp[i + 1][j + h] += dp[i][j];
                }
            }
        }
    }
}

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

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

    #ifndef local
    getDp();
    #endif // local

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

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

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

    int sum = 5 * n;
    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 ++)
            s += dp[255 - i - 1][sum - j];

        sum -= ap[i];
    }

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

    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];
    }

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

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

    for(int i = n * 8 - 1; i >= 0; i --)
    {
        //cout << "AVEM ANT ";
       // afis(sp);


       // cout << "POUTEREA 2lai ";afis(p[i]);

        tmp = sp;

        /*for(int i = 0; i <= 10; i ++)
            cout << tmp.v[i] << " ";
        cout << "**\n";

        cout << " = aNT"; afis(tmp);*/
        tmp += p[i];

        /*for(int i = 0; i <= 10; i ++)
            cout << tmp.v[i] << " ";
        cout << "**\n";

        cout << " +p[]i "; afis(tmp);*/
        if(s > tmp)
        {
           /* afis(s);
            cout << " >= ";
            afis(tmp);
            cout << "INTRA\n";*/
            sp += p[i];
            a[i] = 1;
        }



    }
//    cout << "\n";


    for(int i = n * 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);
    }
}

Compilation message (stderr)

encoder.cpp:122:10: warning: "/*" within comment [-Wcomment]
         //*v** = *(x.v);
           
encoder.cpp: In function 'void encode(int, int*)':
encoder.cpp:201:20: warning: suggest parentheses around comparison in operand of '==' [-Wparentheses]
             if(cod > s == 1)
                ~~~~^~~

decoder.cpp:122:10: warning: "/*" within comment [-Wcomment]
         //*v** = *(x.v);
           
decoder.cpp: In function 'void decode(int, int, int*)':
decoder.cpp:181:13: 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