#############################################################

import sys
sys.setrecursionlimit(10**7)

from heapq import heappop,heappush
from collections import deque,defaultdict,Counter
from bisect import bisect_left, bisect_right
from itertools import product,combinations,permutations
from math import sin,cos
#from math import isqrt #DO NOT USE PyPy

ipt = sys.stdin.readline
iin = lambda :int(ipt())
lmin = lambda :list(map(int,ipt().split()))

#############################################################

for _ in range(iin()):
    M = iin()
    D = lmin()
    t = ""
    for i in range(9):
        t += str(i+1)*D[i]
    
    t = int(t)*10**9
    t += (-t)%M
    print(t)