PPaste!

# Machine code

# written by pssolanki

def LetMeDoIt(k):
    s = k-1
    for x in range(1, k):
        if '7' in str(s) or '7' in str(x):
            s -= 1
            continue
        elif '7' not in str(s) or '7' not in str(x):
            return str(x) + ' ' + str(s)

def MainApp():
    t = int(input())

    for _ in range(t):
        k = int(input())

        result = LetMeDoIt(k)
        print(result)
        
if __name__ == '__main__':
    MainApp()

#=======================================

#studds solution

# written by pssolanki

def LetMeDoIt(brr, n, grr):
    f = []

    for _ in range(n):
        if min(brr) < min(grr):
            f.append(min(brr))
            brr.remove(min(brr))
            continue
        elif min(grr) < min(brr):
            f.append(min(grr))
            grr.remove(min(grr))
            continue
        elif min(brr) == min(grr):
            f.append(min(grr))
            grr.remove(min(grr))
            continue
        
    if len(f) != n*2:
        return 'NO'
    else:
        return 'YES'

def MainApp():
    t = int(input())

    for _ in range(t):
        n = int(input())
        brr = list(map(int, input().split()))
        grr = list(map(int, input().split()))
        result = LetMeDoIt(brr, n, grr)
        print(result)
        
if __name__ == '__main__':
    MainApp()

#================================

#0 sum range solution

# written by pssolanki

def LetMeDoIt(arr, N):
    subs = 0

    for x in range(N):
        for p in range(x+1, N):
            if sum(arr[x:p]) == 0:
                subs += 1
            else:
                continue
    return subs

def MainApp():
    N = int(input())
    arr = list(map(int, input().split()))

    result = LetMeDoIt(arr, N)
    print(result)
        
if __name__ == '__main__':
    MainApp()

#=====================