Cod sursa(job #2886685)

Utilizator Mihai_EduardMihai Eduard Mihai_Eduard Data 8 aprilie 2022 01:26:37
Problema Radix Sort Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.92 kb
#include <bits/stdc++.h>

using namespace std;

ifstream fin("radixsort.in");
ofstream fout("radixsort.out");
const int NMAX=10000001;

///impartim numerele in 4 bucket-uri de cate un byte si le sortam incepand cu cea mai putin semnificativa parte
int N, v[NMAX], a, b, c, aux[NMAX], f[256], ind[256];

int main()
{
    fin>>N>>a>>b>>c;
    v[1]=b;
    for(int i=2;i<=N;i++)
        v[i]=(1LL*a*v[i-1]+b)%c;

    for(int byte=0;byte<4;byte++){
        for(int i=0;i<256;i++)
            f[i]=0;
        for(int i=1;i<=N;i++)
            f[(v[i]>>(byte*8))&255]++;

        ind[0]=0;
        for(int i=1;i<256;i++)
            ind[i]=ind[i-1]+f[i-1];
        for(int i=1;i<=N;i++)
            aux[++ind[(v[i]>>(byte*8))&255]]=v[i];

        for(int i=1;i<=N;i++)
            v[i]=aux[i];
    }

    for(int i=1;i<=N;i+=10)
        fout<<v[i]<<' ';

    fin.close();
    fout.close();
    return 0;
}