school/semester_5/paralelno_racunanje/naloga_1/main.cpp

#include <iostream>
#include <omp.h>
#include <vector>

uint64_t sum_rows(int N, std::vector<std::vector<int>> &matrix)
{
  uint64_t result = 1;
  for (int i = 0; i < N; i++)
  {
    int sum = 0;
    for (int j = 0; j < N; j++)
    {
      sum += matrix[i][j];
    }
    result *= sum;
  }
  return result;
}

uint64_t sum_columns(int N, std::vector<std::vector<int>> &matrix)
{
  uint64_t result = 1;
  for (int j = 0; j < N; j++)
  {
    int sum = 0;
    for (int i = 0; i < N; i++)
    {
      sum += matrix[i][j];
    }
    result *= sum;
  }
  return result;
}

int main()
{
  int N = 3;

  std::vector<std::vector<int>> matrix(N, std::vector<int>(N));

  int st = 1;
  for (int i = 0; i < N; i++)
  {
    for (int j = 0; j < N; j++)
    {
      matrix[i][j] = st++;
    }
  }

  uint64_t result1, result2;

#pragma omp parallel
  {
#pragma omp sections
    {
#pragma omp section
      {
        result1 = sum_rows(N, matrix);
      }
#pragma omp section
      {
        result2 = sum_columns(N, matrix);
      }
    }
  }

  printf("Rezultat: %ld\n", (result1 + result2));

  return 0;
}