Changing a few things and accounting for false positives (assuming worst case and rounding up for case 2a, rounding down for 2b)
- # Changes needed in 2a = row 1 + row 7 + row 8 + row 9 + row 10 = 34 + 80 + 10 + 3 + 3 = 130
- # Changes needed in 2b = row 1 + row 4 + row 5 + row 6 + row 7 * (~3) = 34 + 80 + 141 + 74 + 85 + 240 = 654
- # Changes needed in 2c = Changes in 2b + some more
becomes
* # Changes needed in 2a = row 1 + row 4 + row 7 + row 8 + row 9 + row 10 = 34 + 80 + 141 + 10 + 3 + 3 = 271 * # Changes needed in 2b = row 1 + row 4 + row 5 + row 6 + row 7 * (~2) = 34 + 141 + 74 + 85 + 160 = 494 * # Changes needed in 2c = Changes in 2b + some more
-Deepa