Cod sursa(job #1811517)

Utilizator AlexNiuclaeNiculae Alexandru Vlad AlexNiuclae Data 21 noiembrie 2016 12:10:20
Problema Radix Sort Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.05 kb
#include <bits/stdc++.h>

using namespace std;

const int dim = 8;
const int nmax = 1e7 + 10;

int n;
int v[nmax], aux[nmax];

void input() {
    int a, b, c;
    scanf("%d %d %d %d", &n, &a, &b, &c);

    v[1] = b;
    for (int i = 2; i <= n; ++i)
        v[i] = (1LL * a * v[i-1] + b) % c;
}

void sort_bucket(int p) {
    int nr[1<<dim];
    for (int i = 0; i < (1 << dim); ++i) nr[i] = 0;

    p = dim * p;

    int mask = (1 << dim) - 1;
    for (int i = 1; i <= n; ++i)
        nr[(v[i]>>p)&mask]++;

    for (int i = 1; i <= mask; ++i)
        nr[i] += nr[i-1];

    for (int i = n; i ; --i)
        aux[nr[(v[i]>>p)&mask]--] = v[i];

    for (int i = 1; i <= n; ++i)
        v[i] = aux[i];
}

void solve() {
    for (int i = 0; i < 32 / dim; ++i)
        sort_bucket(i);
}

void output() {
    for (int i = 1; i <= n; i += 10)
        printf("%d ", v[i]);
}

int main()
{
    freopen("radixsort.in","r",stdin);
    freopen("radixsort.out","w",stdout);

    input();
    solve();
    output();

    return 0;
}