Cod sursa(job #2898347)

Utilizator Katherine456719Swan Katherine Katherine456719 Data 6 mai 2022 16:47:47
Problema Radix Sort Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.11 kb
#include <fstream>
using namespace std;
const int maxN = 10000005, base = 256;
int n, v[maxN], aux[maxN];
int freq[base + 5], poz[base + 5];

int main(){
    ifstream fin("radixsort.in");
    ofstream fout("radixsort.out");
    int a,b,c;
    fin >> n >> a >> b >> c;
    v[1] = b;
    for(int i = 2; i <= n; i++) {
        v[i] = 1LL * (1LL * v[i - 1] * a + b) % c;
    }

    for(int i = 0, mask = 255; i < 32; i += 8, mask <<= 8) {
        for(int j = 1; j <= n; j++) {
            int cifra = (v[j] & mask) >> i;
            freq[cifra]++;
        }

        for(int j = 1; j < base; j++) freq[j] += freq[j - 1];

        for(int j = 1; j <= n; j++) {
            int cifra = (v[j] & mask) >> i;
            poz[cifra]++;
            int newpoz = poz[cifra];
            if(cifra > 0) newpoz += freq[cifra - 1];
            aux[newpoz] = v[j];
        }

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

        for(int j = 0; j < base; j++) {
            freq[j] = 0;
            poz[j] = 0;
        }
    }

    for(int i = 1; i <= n; i +=10)
        fout << v[i]<< ' ';
    return 0;
}