Cod sursa(job #2301970)

Utilizator BlaugranasEnal Gemaledin Blaugranas Data 13 decembrie 2018 18:18:11
Problema Radix Sort Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.84 kb
#include<fstream>
#include<cstring>
using namespace std;
#define N 10000001
#define mask (1 << 8) -1
#define pos(x) (x >> (it * 8) ) & mask
int v[2][N],i,n;
long long a,b,c;
void radix(int v[2][N],int dim)
{
    int i,it,cnt[mask + 1],index[mask + 1];
    for (it = 0; it < 4; ++it)
    {
        memset(cnt,0,sizeof(cnt));
        for (i = 0; i < dim; ++i)
            ++cnt[(v[it & 1][i] >> (it * 8)) & mask ];
        index[0] = 0;
        for (i = 1;i < mask + 1; ++i)
            index[i] = index[i - 1] + cnt[i - 1];
        for (i = 0; i < dim; ++i)
        v[( it + 1) & 1][index[pos(v[it & 1][i])]++] = v[it & 1][i];
    }
}
int main()
{
    ifstream f("radixsort.in");
    ofstream g("radixsort.out");
    f>>n>>a>>b>>c;
    for(v[0][0]=b,i=1;i<n;i++)
        v[0][i]=(a*v[0][i-1]+b)%c;
    radix(v,n);
    for(i=0;i<n;i+=10)
        g<<v[0][i]<<' ';
}