I would like to add the elements of an array 70x70 for example, in a way that the result will be a new 35x35 array where the first element new [0,0] will be the result for the addition of the array[0,0]+array[0,69]+array[69,0]+array[69,69] , the new [0,2]= array[0,2] + array[0,68]+array[69,2]+array[69,68] and etc. Any ideas?
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