Cod sursa(job #2785800)

Utilizator qubitrubbitQubit Rubbit qubitrubbit Data 19 octombrie 2021 16:02:21
Problema Radix Sort Scor 30
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.38 kb
#include <fstream>
#include <vector>
#include <cmath>
using namespace std;

ifstream fin("radixsort.in");
ofstream fout("radixsort.out");

int n, a, b, c;
int arr[10000013];

int max(int arr[], int n)
{
    int m = arr[0];
    for (int i = 0; i < n; ++i)
    {
        if (m < arr[i])
        {
            m = arr[i];
        }
    }
    return m;
}

void countingSort(int exp, int arr[], int n)
{
    int count[10];
    fill(count, count + 10, 0);
    int pos[10];
    int temp[n + 1];
    for (int i = 1; i <= n; ++i)
    {
        ++count[(arr[i] / exp) % 10];
    }
    pos[0] = 1;
    for (int i = 1; i < 10; ++i)
    {
        pos[i] = pos[i - 1] + count[i - 1];
    }
    for (int i = 1; i <= n; ++i)
    {
        int digit = (arr[i] / exp) % 10;
        int idx = pos[digit];
        temp[idx] = arr[i];
        ++pos[digit];
    }
    for (int i = 1; i <= n; ++i)
    {
        arr[i] = temp[i];
    }
}

void radixSort(int arr[], int n)
{
    int m = max(arr, n);
    for (int exp = 1; m / exp > 0; exp *= 10)
    {
        countingSort(exp, arr, n);
    }
}

int main()
{
    fin >> n >> a >> b >> c;
    arr[1] = b;
    for (int i = 2; i <= n; ++i)
    {
        arr[i] = (1L * a * arr[i - 1] + b) % c;
    }
    radixSort(arr, n);
    for (int i = 1; i <= n; i += 10)
    {
        fout << arr[i] << " ";
    }
    return 0;
}