Cod sursa(job #2675367)

Utilizator Marius7122FMI Ciltea Marian Marius7122 Data 21 noiembrie 2020 14:59:13
Problema Radix Sort Scor 30
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.41 kb
#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
 
using namespace std;

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

typedef long long ll;

ll a, b, c;
int n;

void radixSort(vector<int> &v, int elMax = -1, int basePow = 8)
{
    int base = 1 << basePow;
    int mask = base - 1;

    vector<int> aux(v.size()), cnt(base), start(base);

    if(elMax == -1)
        elMax = *max_element(v.begin(), v.end());
    int sh = 0;
    int i = 0;
    while((elMax >> sh) > 0)
    {
        vector<int> &currArr = (i % 2 == 0) ? v : aux;
        vector<int> &nextArr = (i % 2 == 1) ? v : aux;

        cnt.assign(base, 0);
        for(int x : currArr)
            cnt[(x >> sh) & mask]++;
        start[0] = 0;
        for(int i = 1; i < base; i++)
            start[i] = start[i-1] + cnt[i-1];

        for(int x : currArr)
        {
            int coef = (x >> sh) & mask;
            nextArr[start[coef]++] = x;
        }

        sh += basePow;
        i++;
    }

    if(i % 2 == 1)
        v = aux;
}

int main()
{
    fin >> n >> a >> b >> c;
    vector<int> v(n);

    int elMax = b;
    v[0] = b;
    for(int i = 1; i < n; i++)
    {
        v[i] = (a * v[i-1] + b) % c;
        elMax = max(elMax, v[i]);
    }

    radixSort(v, elMax);

    for(int i = 0; i < n; i += 10)
        fout << v[i] << ' ';

    return 0;
}