Cod sursa(job #2673301)

Utilizator zarg169Roxana zarg169 Data 16 noiembrie 2020 14:24:49
Problema Radix Sort Scor 70
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.23 kb
#include <iostream>
#include <fstream>

using namespace std;

const int MAXN = 10000005;
int n;
int v[MAXN], sorted[MAXN], bucket[1 << 17];

void radixSort(int bucketsize, int nrbuc) {
    int mask = (1 << 16) - 1, lim = 1 << 16;
    for (int i = 0; i < lim; ++i) {
        bucket[i] = 0;
    }
    for (int i = 1; i <= n; ++i) {
        int pos = (v[i] >> (bucketsize * nrbuc)) & mask;
        bucket[pos]++;
    }
    for (int i = 1; i < lim; ++i) {
        bucket[i] += bucket[i - 1];
    }
    for (int i = n; i >= 1; --i) {
        int pos = (v[i] >> (bucketsize * nrbuc)) & mask;
        sorted[bucket[pos]] = v[i];
        bucket[pos]--;
    }
    for (int i = 1; i <= n; ++i) {
        v[i] = sorted[i];
    }
}

int main()
{
    ifstream fin("radixsort.in");
    ofstream fout("radixsort.out");
    ios::sync_with_stdio(false);
    fout.tie(nullptr);
    int a, b, c;
    fin >> n >> a >> b >> c;

    v[1] = b;
    for (int i = 2; i <= n; ++i) {
        int val = static_cast<int>((1LL * a * v[i - 1] + b) % c);
        v[i] = val;
    }
    for (int i = 0; i <= 1; ++i) {
        radixSort(16, i);
    }
    for (int i = 1; i <= n; i += 10) {
        fout << v[i] << " ";
    }

    return 0;
}