t = int(input())
for i in range(t):
    n,a,b = list(input().split())
    if int(a)*int(b)==int(n):
        if (len(a+b)) == len(n):
            if int(a)%10 != 0 or int(b)%10!=0:
                if sorted(list(a+b)) == sorted(list(n)):
                    print("YES")
                else:
                    print("NO")
            else:
                print("NO")
        else:
            print("NO")
    else:
        print("NO")