Cod sursa(job #1462846)

Utilizator TeodorescuStefanEduardTeodorescu Stefan Eduard TeodorescuStefanEduard Data 19 iulie 2015 10:16:26
Problema Radix Sort Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.05 kb
#include <cstdio>
#include <algorithm>
#include <cstring>
#define B 8
#define mask (1 << 8) - 1
#define Nmax 10000005
using namespace std;
int n, a, b, c, i, j, v[Nmax];
int w[mask + 5], Next[mask + 5], V[Nmax];
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 * v[i - 1] * a + b) % c;
 
    for (i = 0; i < 4; ++ i)
    {
        memset(w, 0, sizeof(w));
        memset(Next, 0, sizeof(Next));
        for (j = 1; j <= n; ++ j)
            ++ w[(v[j] >> (B * i)) & mask],
               V[j] = v[j];
        for (j = 1; j <= mask; ++ j)
            w[j] += w[j - 1];
 
        for (j = 1; j <= n; ++ j)
        {
            c = (V[j] >> (B * i)) & mask;
            ++ Next[c];
 
            if (c)
                v[Next[c] + w[c - 1]] = V[j];
            else v[Next[c]] = V[j];
        }
    }
 
    for (i = 1; i <= n; i += 10)
        printf("%d ", v[i]);
    return 0;
}