Cod sursa(job #3218773)

Utilizator unomMirel Costel unom Data 28 martie 2024 08:43:24
Problema Radix Sort Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 2.01 kb
#include <fstream>
#include <algorithm>
#include <vector>
#include <stdio.h>
#include <ctype.h>

using namespace std;

class InParser
{
private:
    FILE *fin;
    char *buff;
    int sp;

    char read_ch()
    {
        sp++;
        if(sp == 4096)
        {
            fread(buff, 1, 4096, fin);
            sp = 0;
        }

        return buff[sp];
    }

public:
    InParser (const char *nume)
    {
        fin = fopen(nume, "r");
        buff = new char[4096]();
        sp = 4095;
    }

    InParser& operator >> (int &n)
    {
        int sgn;
        char c;

        while(!isdigit(c = read_ch()) && c != '-');

        if(c == '-')
        {
            sgn = -1;
            n = 0;
        }
        else
        {
            sgn = 1;
            n = c - '0';
        }

        while(isdigit(c = read_ch()))
        {
            n = n * 10 + c - '0';
        }

        n *= sgn;
        return *this;
    }
};

InParser f("radixsort.in");
ofstream g("radixsort.out");
int v[10000005];
int n, a, b, c;
int xmax;

void radix_sort()
{
    int q = 0;
    while(xmax != 0)
    {
        q++;
        xmax /= 10;
    }

    int d = 1;

    for(int y = 1; y<=q; y++)
    {
        vector<int> m[10];

        if(y == 1)
        {
            d = 1;
        }
        else
        {
            d = d * 10;
        }

        for(int i = 1; i<=n; i++)
        {
            m[(v[i]/d)%10].push_back(v[i]);
        }

        int ind = 0;
        for(int i = 0; i<=9; i++)
        {
            for(int j = 0; j<m[i].size(); j++)
            {
                ind++;
                v[ind] = m[i][j];
            }
        }
    }
}

int main()
{
    f>>n>>a>>b>>c;
    v[1] = b;
    xmax = v[1];
    for(int i = 2; i<=n; i++)
    {
        v[i] = (1LL*a * v[i-1] % c + b) % c;
        xmax = max(xmax, v[i]);
    }

    radix_sort();

    for(int i = 1; i<=n; i+=10)
    {
        g<<v[i]<<" ";
    }
    return 0;
}