human
Solve the following python programming problem given the following code:
def main() : 
    low = 1 
    high = 100 
    print ('Think of a number between {} and {}'.format (low, high)) 
    print ('When you are ready, let me know and I will attempt to guess your number.') 
    input ('
Enter anything and I will start: ') 
    def valid_input() : 
        while True : 
            reply = input ("
Enter 'low', 'high' or 'correct'.   ") 
            if (reply in ('low', 'high', 'correct')) : 
                return reply 
print ('I do not understand what you wrote.') 
while True : 
        guess = ((low + valid_input) // 2) 
        print ('I am guessing {}'.format (guess)) 
        reply = valid_input () 
        if (reply == 'low') : 
            low = guess 
else : 
            if (reply == 'high') : 
                high = guess 
else : 
                print ('Thank you for playing with me!') 
                break 
if (low == high) : 
            print ('You cheated!') 
            break 

    
    

    Fix the buggy line: guess = ((low + valid_input) // 2)
assistant
#Here is Python code to fix the buggy line: guess = ((low + valid_input) // 2)
.

guess = ((low + high) // 2)