Cod sursa(job #1802451)

Utilizator gabrielinelusGabriel-Robert Inelus gabrielinelus Data 10 noiembrie 2016 13:06:40
Problema Radix Sort Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.04 kb
#include <cstdio>
#include <vector>

#define MASK 255 /// 8 biti
#define Lim 256

using namespace std;
vector<int> v;
int N,A,B,C;

void Read()
{
    scanf("%d%d%d%d",&N,&A,&B,&C);
    v.resize(N+1);
    v[1] = B;
    for(int i = 2; i <= N; ++i)
        v[i] = (1LL * A * v[i-1] + B) % C;
}

vector<int> bucket[Lim];

void Radix_Sort(int k)
{
    for(int i = 1; i <= N; ++i)
        bucket[ ((v[i])>>k) & MASK ].push_back(v[i]);
    int pz = 0;
    for(int i = 0; i <= MASK; ++i) {
        for(vector<int>::iterator it = bucket[i].begin(); it != bucket[i].end(); ++it)
            v[++pz] = *it;
         bucket[i].clear();
         bucket[i].resize(0);
         bucket[i].shrink_to_fit();
    }
}

void Solve()
{
    for(int i = 0; i <= 3; ++i)
        Radix_Sort(8*i);
}

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

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

    Read();
    Solve();
    Print();

    return 0;
}