Cod sursa(job #1249205)

Utilizator cernat.catallinFMI Cernat Catalin Stefan cernat.catallin Data 26 octombrie 2014 17:47:32
Problema Radix Sort Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.97 kb
#include <stdio.h>

#define Nmax 10000005
// #define Base 65535
#define Base 255

int n, a, b, c;
int v[Nmax], u[Nmax], bucket[Base + 1];

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 (int i = 2; i <= n; ++i)
        v[i] = (1LL * a * v[i - 1] + b) % c;

    int power = 1;
    for (int i = 1; Base >> i; ++i)
        ++power;

    for (int i = 0; i < 32; i += power){
        for (int j = 0; j <= Base; ++j)
            bucket[j] = 0;

        for (int j = 1; j <= n; ++j)
            ++bucket[(v[j] >> i) & Base];

        for (int j = 1; j <= Base; ++j)
            bucket[j] += bucket[j - 1];

        for (int j = n; j > 0; --j)
            u[bucket[(v[j] >> i) & Base]--] = v[j];

        for (int j = 1; j <= n; ++j)
            v[j] = u[j];
            
    }

    for (int i = 1; i <= n; i += 10)
        printf("%d ", v[i]);
    printf("\n");

    return 0;
}