import sys
input = sys.stdin.readline

T=int(input())
for tests in range(T):
    N=int(input())
    A=list(map(int,input().split()))
    La,Ra,Lb,Rb=map(int,input().split())

    ANS=0

    S=[0]
    for a in A:
        S.append(S[-1]+a)

    h=x=-1

    for i in range(La,Ra+1):

        if Lb<i<Rb:
            ANS=max(ANS,min(S[i],S[-1]-S[i-1]))
        elif Lb>=i:
            x=max(Lb,i+1)
            h=(i+x)//2
            ANS=max(ANS,S[h])
        else:
            x=min(Rb,i-1)
            h=(i+x+1)//2
            ANS=max(ANS,S[-1]-S[h-1])

        #print(i,ANS,x,h)
            

    

    print("Case #"+str(tests+1)+": "+str(ANS))