Cod sursa(job #2301979)

Utilizator BlaugranasEnal Gemaledin Blaugranas Data 13 decembrie 2018 18:24:09
Problema Radix Sort Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.69 kb
#include<fstream>
#include<cstring>
using namespace std;
#define mask (1 << 8) -1
#define pos(x) (x >> (it * 8) ) & mask
int v[2][10000001],i,n,it,cnt[mask+1],e[mask+1];
long long a,b,c;
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;
    for(it=0;it<4;++it)
    {
        memset(cnt,0,sizeof(cnt));
        for(i=0;i<n;++i)
            ++cnt[(v[it&1][i]>>(it*8))&mask];
        e[0]=0;
        for(i=1;i<mask+1;++i)
            e[i]=e[i-1]+cnt[i-1];
        for(i=0;i<n;++i)
            v[(it+1)&1][e[pos(v[it&1][i])]++]=v[it&1][i];
    }
    for(i=0;i<n;i+=10)
        g<<v[0][i]<<' ';
}