Almost correct bracket sequence - HackerEarth Solution

t = int(input())

for i in range(t):
    x = list(map(int, input().split()))
    y = []
    if x[1]>2:
        print("Impossible")
    else:
        if x[0]==1 and x[1]==1:
            print("(")
        elif x[0]==1 and x[1]==2:
            print(")")
        else:

            for j in range(x[0]):
                if j%2==0:
                    print("(", end = '')
                else:
                    print(")", end = '')
    print()