n = input()

for i in range( int(n)):
x ,y=map(int,input().split())

if(x%2==0 and y%2==0):
    print('yes')   

elif(x%2!=0 and y%2!=0):
    print('yes')        
else:      
    print('no')

This is my python code , it gets the verdict runtime error when i submit it. What is the problem in my code