Ввод элементов массива, параллельное программирование

#include <ctime>
#include <iostream>
#include <cstdlib>
#include <vector>
#include <fstream>
#include <omp.h>
#include <conio.h>
using namespace std;
 
int main() {
    srand(time(NULL));
int n, k, c, sum;
clock_t st, et;
double iv;
sum = 0;
    int A = 1;
    int B = 100;
cout << “Enter N:\n”;
cin >> n;
cout << “Enter number of threads:\n”;
cin >> k;
omp_set_dynamic(0);
omp_set_num_threads(k);
vector <int> myvector;
st = clock();
ofstream fout("file1.txt");
#pragma omp parallel for {
    for(int i = 0; i < n; i++) {
        c = A + rand() % ((B + 1) - A);
        myvector.push_back(c);
        fout << c << endl;
    }
}
fout.close();
#pragma omp parallel for reduction(+: sum) {
for (int i = 0; i < ivector.size(); i++) {
  sum += myvector.at(i);
}
}
et = clock();
iv = (double)(et-st)/CLOCKS_PER_SEC;
printf("time is %f\n", iv);
cout << “sum = ” << sum << endl;
_getch();
    return 0;
}

#pragma omp parallel for {
    for(int i = 0; i < n; i++) {
        myvector.push_back((2*i*i) + (16*i) + 28);
    }
}

#include <ctime> 
#include <iostream> 
#include <vector> 
#include <omp.h> 
#include <conio.h> 
using namespace std; 
 
int main() { 
int n, k, sum; 
clock_t st, et; 
double iv; 
sum = 0; 
cout « “Enter N:\n”; 
cin » n; 
cout « “Enter number of threads:\n”; 
cin » k; 
omp_set_dynamic(0); 
omp_set_num_threads(k); 
vector <int> myvector; 
st = clock(); 
#pragma omp parallel for 
{ 
for(int i = 0; i < n; i++) { 
myvector.push_back(i % 10); 
} 
} 
#pragma omp parallel for reduction(+: sum) 
{ 
for (int i = 0; i < ivector.size(); i++) { 
sum += myvector.at(i); 
} 
} 
et = clock(); 
iv = (double)(et-st)/CLOCKS_PER_SEC; 
printf("time is %f\n", iv); 
cout « “sum = ” « sum « endl; 
_getch(); 
return 0; 
}