cas = int(input())

def run():
    n = int(input())
    a = [*map(int, input().split())]
    la,ra,lb,rb = map(int, input().split())
    
    la-=1
    lb-=1
    ra-=1
    rb-=1

    s = [0]
    for x in a:
        s.append(s[-1] + x)

    ans = 0
    for ia in range(la,ra+1):
        if ia <= lb:
            t = (ia + lb) // 2
            ans = max(ans, s[t + 1])
        elif ia >= rb:
            t = (ia + rb + 1) // 2
            ans = max(ans, s[n] - s[t])
        else:
            ans = max(ans, min(s[ia + 1], s[n] - s[ia]));


    return ans

for ca in range(cas):
    ans = run()
    print(f'Case #{ca+1}: {ans}')