#include <stdio.h>
#include <omp.h>
 
#define ARRAY_SIZE 3000
#define NUM_THREADS 4
 
int main() {
    int i, sum = 0;
    int array[ARRAY_SIZE];
 
    // Initialize array
    for (i = 0; i < ARRAY_SIZE; i++) {
        array[i] = i + 1;
    }
 
    // Calculate sum in parallel
    #pragma omp parallel for num_threads(NUM_THREADS) reduction(+:sum)
    for (i = 0; i < ARRAY_SIZE; i++) {
        sum += array[i];
    }
 
    printf("Sum: %d\n", sum);
 
    return 0;
}
 

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