Cod sursa(job #2137788)

Utilizator inquisitorAnders inquisitor Data 21 februarie 2018 01:37:06
Problema Radix Sort Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.73 kb
#include <cstdio>

unsigned int N, A, B, C, v[0x989680], w[0x989680], p;

void inline CountingSort(unsigned int A[], unsigned int B[], unsigned int digit)
{
    unsigned int frequence[0x100]{}, index[0x100]; index[0x0] = 0x0;

    for(unsigned int i = N; i; ++frequence[A[--i] >> digit & 0xFF]);

    for(unsigned int i = 0x0; i != 0x100; index[++i] = index[~-i] + frequence[~-i]);

    for(unsigned int i = 0x0; i != N; ++i) B[index[A[i] >> digit & 0xFF]++] = A[i];
}

char outBuffer[0xA7D8C0];

void inline itoa(unsigned int x)
{
    unsigned int digits = x > 0x3B9AC9FF ? 0xA :
                          x > 0x5F5E0FF  ? 0x9 :
                          x > 0x98967F   ? 0x8 :
                          x > 0xF423F    ? 0x7 :
                          x > 0x1869F    ? 0x6 :
                          x > 0x270F     ? 0x5 :
                          x > 0x3E7      ? 0x4 :
                          x > 0x63       ? 0x3 :
                          x > 0x9        ? 0x2 : 0x1;

    for(unsigned int i = ~-digits; ~i; --i)
    {
        outBuffer[p + i] = x % 0xA + 0x30;

        x = x / 0xA;
    }

    p = p + digits; outBuffer[p++] = 0x20;
}

int main()
{
    freopen("radixsort.in", "r", stdin);
    freopen("radixsort.out", "w", stdout);

    scanf("%d %d %d %d", &N, &A, &B, &C);

    v[0x0] = B;

    for(unsigned int i = 0x1; i != N; ++i)
    {
        unsigned long long j = 0x1ULL * v[~-i] * A + B;

        v[i] = C > j ? j : j - j / C * C;
    }

    CountingSort(v, w, 0x0);
    CountingSort(w, v, 0x8);
    CountingSort(v, w, 0x10);
    CountingSort(w, v, 0x18);

    for(unsigned int i = 0x0; i != N; i = i + 0xA)
    {
        itoa(v[i]);
    }

    puts(outBuffer);

    return 0;
}