int* twoSum(int* nums, int numsSize, int target) {
    int i,j;
    static int a[2];
    
    for(i = 0; i < numsSize; i++){
        for(j = i +1; j < numsSize; j++){
            if(nums[i] + nums[j] == target){
                a[0] = i;
                a[1] = j;
                return a;
            }
        }
    }
    return 0;
}