Cod sursa(job #2134447)

Utilizator flaviu_2001Craciun Ioan-Flaviu flaviu_2001 Data 17 februarie 2018 22:50:48
Problema Radix Sort Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1 kb
#include <bits/stdc++.h>

using namespace std;

const int base = 256;
int n, v[10000005];
vector<int> buckets[base];

void list_to_buckets(int64_t it)
{
    for (int64_t i = 0; i < base; ++i)
        buckets[i].clear();
    for (int64_t i = 1; i <= n; ++i){
        int64_t dig = v[i]%it;
        dig /= (it/base);
        buckets[dig].push_back(v[i]);
    }
}

void buckets_to_list()
{
    int p = 0;
    for (int i = 0; i < base; ++i)
        for (vector<int>::iterator it = buckets[i].begin(); it != buckets[i].end(); ++it)
            v[++p] = *it;
}

int main()
{
    ifstream fin ("radixsort.in");
    ofstream fout ("radixsort.out");
    fin >> n;
    int64_t a, b, c;
    fin >> a >> b >> c;
    v[1] = b;
    for (int64_t i = 2; i <= n; ++i)
        v[i] = (a*v[i-1]+b)%c;
    int64_t it = base;
    for (int64_t i = 1; i <= 4; ++i){
        if(i%2 == 1)list_to_buckets(it);
        else buckets_to_list();
        it *= base;
    }
    for (int64_t i = 1; i <= n; i += 10)
        fout << v[i] << " ";
    return 0;
}