#include <stdio.h>

#define N 15

__global__ void funkcja(int *a, int *b, int *c)
{
    int indeks = blockIdx.x;
    if (indeks < N) {
        c[indeks]= a[indeks] + b[indeks];
    }
}

int main(void)
{
    int *a, *b, *c;
    cudaMallocManaged(&a, N*sizeof(int));
    cudaMallocManaged(&b, N*sizeof(int));
    cudaMallocManaged(&c, N*sizeof(int));


    for (int i = 0; i<N; i++) {
        a[i] = 2 *i;
        b[i] = 2 *i;
    }
    funkcja<<<N,1>>>(a, b, c);
    cudaDeviceSynchronize();
    for (int i = 0; i< N; i++) {
        printf("%d + %d = %d\n", a[i], b[i], c[i]);
    }
    cudaFree(a);
    cudaFree(b);
    cudaFree(c);
    return 0;
}