Cod sursa(job #1162740)

Utilizator Al3ks1002Alex Cociorva Al3ks1002 Data 31 martie 2014 22:34:34
Problema Radix Sort Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.76 kb
#include<cstdio>
using namespace std;
const int nmax = 10000005;
const int mask = (1<<8)-1;
int n,a,b,c,k,shift,v[nmax],w[nmax],i,buck[mask+5];
int main()
{
	freopen("radixsort.in","r",stdin);
	freopen("radixsort.out","w",stdout);
	scanf("%d%d%d%d",&n,&a,&b,&c); v[1]=b;
	for(i=2;i<=n;i++) v[i]=(1LL*a*v[i-1]+b)%c;
    for(shift=0;shift<32;shift+=8)
    {
        for(i=1;i<=n;i++)
        {
            k=(v[i]>>shift)&mask;
            buck[k]++;
        }
        for(i=1;i<=mask;i++) buck[i]+=buck[i-1];
        for(i=n;i;i--)
        {
            k=(v[i]>>shift)&mask;
            w[buck[k]--]=v[i];
        }
        for(i=1;i<=n;i++) v[i]=w[i];
        for(i=0;i<=mask;i++) buck[i]=0;
    }
    for(i=1;i<=n;i+=10) printf("%d ",v[i]);
	return 0;
}