Help me in solving MANYSUMS problem

help
,
1

My issue

runtime error?
I’ve run it on my pc software, it works perfectly fine
codechef needs to understand that there are various methods to approach a problem, however you are restricting the thinking by limiting the memory space and displaying errors
all i want to say is, don’t just stick to one solution of yours and expect every coder to approach the same

My code

# cook your dish here
t=int(input())
for i in range(t):
    l,r=map(int,input().split())
    temp=[]
    res=[]
    for i in range(l,r+1):
        temp.append(i)
    for j in temp:
        for i in range(l,r+1):
            s=j+i 
            res.append(s)
    a=list(set(res))
    print(len(a))

Learning course: Level up from 1* to 2*
Problem Link: CodeChef: Practical coding for everyone

2

@charan940461
Yeah u are right but your approach will take alot of memory and time because u r looping from l to r which is not right because of high value constraints .
So hint of some another logic .
Hint :- think of some maths logic .