Cod sursa(job #2773169)

Utilizator ps2001Silviu Popescu ps2001 Data 5 septembrie 2021 12:40:25
Problema Radix Sort Scor 70
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.2 kb
#include <bits/stdc++.h>

using namespace std;

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

#define MAX_N 10000000 + 1
#define RADIX 0xFF
#define RADIX_SIZE 8
#define TOTAL_BYTES sizeof(numbers[0])

int n;
int numbers[MAX_N];

#define get_byte(x) (x >> (byte * 8) & RADIX)

void countsort(int A[], int B[], int byte) {
    int counter[1 << RADIX_SIZE];
    int index[1 << RADIX_SIZE];

    memset(counter, 0, sizeof(counter));

    for (int i = 0; i < n; i++)
        ++counter[get_byte(A[i])];

    index[0] = 0;

    for (int i = 1; i < 1 << RADIX_SIZE; i++)
        index[i] = index[i - 1] + counter[i - 1];

    for (int i = 0; i < n; i++)
        B[index[get_byte(A[i])]++] = A[i];
}

void radixsort() {
    int *temp = new int[n];
    for (int i = 0; i < TOTAL_BYTES; i++) {
        if (i % 2 == 0)
            countsort(numbers, temp, i);
        else
            countsort(temp, numbers, i);
    }
}

int main()
{
    int a, b, c;
    fin >> n >> a >> b >> c;

    numbers[0] = b % c;
    for (int i = 1; i < n; i++)
        numbers[i] = (1LL * a * numbers[i - 1] % c + b) % c;

    radixsort();

    for (int i = 0; i < n; i+= 10)
        fout << numbers[i] << ' ';
    fout << endl;
    return 0;
}