Is that a wrong idea? Is that the wrong way?

intsd = 0; // the final value to select

int* ssdd = new int[y]; //1 For each column, store the stem contents up to y-1

For (inti = 0; i < y; i++) { // Initialize stem content
    ssdd[i] = 0;
}



for (int i = 0; i < y; i++) {

    intcol = i; //The column value of the previously selected row

    int min = 100000; // To find the minimum value

    intim = 0;// Space to temporarily store column values

    ssdd[i] +=img_3[0][i]; // Preserve each column value in advance in the first row

    For (int w = 1; w < x; w++) { // Start the scan from the second row

        If (col == 0) { // when the previously selected column is the leftmost

            for (int z = col; z <= col + 1; z++) {

                if (img_3[w][z] < min) {
                    min = img_3[w][z];
                    im = z;
                }
            }
            col = im;
            ssdd[i] += img_3[w][col];
            continue;

        }

        If (col == y - 1) { // when the previously selected column is right

            for (int z = col - 1; z <= col; z++) {
                if (img_3[w][z] < min) {
                    min = img_3[w][z];
                }
                im = z;
            }

            col = im;
            ssdd[i] += img_3[w][col];
            continue;

        }


        For (int z = col - 1; z < = col + 1; z++) { //Just in the middle

            if (img_3[w][z] < min) {
                min = img_3[w][z];
            }
            im = z;

        }

        col = im;
        ssdd[i] += img_3[w][col];

    }

}


For (inti = 0; i < y; i++) { // for temporary verification
    cout << ssdd[i] << "    ";
}


ssd = ssdd[0];
For (inti = 1; i < y; i++) { // Find the minimum value
    if (ssdd[i] < ssd) {
        ssd = ssdd[i];
    }
}




delete[]ssdd; //Return