t : int = int(input())

for i in range(0, t):
    bats = []
    bats.append(int(input()))
    bats.append(int(input()))
    bats.append(int(input()))

    if not bats[0] == bats[1] * bats[2]:
        print("NO")
        continue

    if not len(str(bats[1])) == len(str(bats[2])):
        print("NO")
        continue

    if not len(str(bats[0])) == 2 * len(str(bats[1])):
        print("NO")
        continue

    if not (bats[1] % 10 or bats[2] % 10):
        print("NO")
        continue

    bats[0] = set(str(bats[0]))

    small = set(str(bats[1]) + str(bats[2]))

    if not bats[0] == small:
        print("NO")
        continue

    print("YES")