Help me in solving LB20 problem

help
,
1

My issue

Not able to solve the problem

My code

t = int(input())
for i in range(t):
    x, y = map(int,input().split())
    
    # Score if problem A is solved first and then problem B is solved
    a = 500-x*2 + (x+y)*4      
    
    # Score if problem B is solved first and then problem A is solved
    b = 1000-y*4 + (x+y)*2
    
    if (a>b):
        print(a)
    else:
        print(b)

Learning course: Learn Data Analytics using SQL and Python
Problem Link: CodeChef: Practical coding for everyone