for _ in range(int(input())):
    n = int(input())
    s = input()
    p = input()
    for i in range(n):
        if s[i] != p[i]:
            if p[i] == '0':
                if not ((i != 0 and p[i - 1] == '1') or (i != n - 1 and p[i + 1] == '1')):
                    print('NO')
                    break
            elif not ((i != 0 and p[i - 1] == '0') or (i != n - 1 and p[i + 1] == '0')):
                print('NO')
                break
    else:
        print("YES")