100Floors level 89
Startup screen. As you can see the apple avobe the door, 'apple = 5' is the hint.
There are five fruits in the room. Those are coconut (7), banana (6), pineapple (9), apple (5) and pear (4). The hint indicates that each fuit name consists of how many characters.
Also, you can find a arrow at right of the door. It shows the order of number. To open the door, push Se (7), Si (6), Ni (9), Fi (5) and Fo (4). Escaped.
100Floors level 90