Cod sursa(job #2247676)

Utilizator algebristulFilip Berila algebristul Data 28 septembrie 2018 21:56:16
Problema Radix Sort Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.01 kb
#include <bits/stdc++.h>

using namespace std;

const int kBuckets = 256;

void sort_by_bucket(int offset, const vector<int>& from, vector<int>& to) {
  vector<int> bucket_count(kBuckets, 0);

  for (int n : from)
    bucket_count[(n >> offset) & 0xFF]++;

  for (int i = 0, total = 0; i < kBuckets; i++) {
    int self = bucket_count[i];
    bucket_count[i] = total;
    total += self;
  }
  
  for (size_t i = 0; i < from.size(); i++) {
    to[bucket_count[(from[i] >> offset) & 0xFF]++] = from[i];
  }
}

int main() {
  #ifdef INFOARENA
  freopen("radixsort.in", "r", stdin);
  freopen("radixsort.out", "w", stdout);
  #endif
  
  int n, a, b, c;
  cin >> n >> a >> b >> c;
  
  vector<int> v, w;
  v.resize(n);
  w.resize(n);

  v[0] = b % c;
  for (int i = 1; i < n; i++) {
    v[i] = (1LL * a * v[i - 1] % c + b) % c;
  }
  
  for (int offset = 0; offset < 32; offset += 8) {
    sort_by_bucket(offset, v, w);
    v.swap(w);
  }
  
  for (int i = 0; i < n; i += 10) {
    cout << v[i] << ' ';
  }
  cout << '\n';
  
  return 0;
}