At the doors 78, you must get the code from the height of each mold, mushrooms high measuring the numbers on the left, if the code is derived inputs to the numbers on the doors. This code 8426.
100 Doors level 78 79 Walkthrough"
At level 79 walkthrough white button next to the door until all the lights turn green.
Touch the left white button then the right. To open the door, touch the bricks on the right button.
Continue to level 80-81 on 100 doors walkthrough