Python
Please look at the picture of the three item 3, thank you
To the reference sample is 1 picture of sailor problem (but I still don't know the remaining three problem is how to do it)

CodePudding user response:

 
# 1 
Tree_high=98 # tree height 
White=10 # day 
Night=7.8 # night 

Def day () : 
X=1 
While 1: 
If (white - night * x * x) & gt;=(tree_high - 10) : 
Return x + 1 
X +=1 

Print (day ()) 

# 2 
Buyer_num=int (input (" buy how many bottles: ")) 
If buyer_num & lt; 3: 
Print (" can you drink to % s "% buyer_num) 
The else: 
Num=buyer_num 
Sum=0 
While 1: 
If num>=3: 
Num=num//3 
The sum + num=
The else: 
Break 
Print (sum + buyer_num) 



# 3 

X=10 
Y=90 
For I in range (120) : # units of time can be set to half a minute 120 units 
If (I % 2==1) : # according to the conditions of the subject, just eat every odd number x y 
Y=y - x 
If (I % 4==0) : # into 4 minutes 
Y=y * 2 
If (I % 6==0) : # into six minutes 
X=x * 2 

Print (y)