目前80分，初学二分查找还能怎么优化啊

n,m=map(int,input().split())
nums=list(map(int,input().split()))
mm=map(int,input().split())
right=n-1
left=0
result=-1
re=[]
for i in mm:
    right = n - 1
    left = 0
    result = -1
    while right>=left:
        mid = (right + left)//2
        if nums[mid]==i:
            right=mid-1
            result=mid
        elif nums[mid]<i:
            left=mid+1
        else:
            right=mid-1
    if result!=-1:
        re.append(str(result+1))
    else:
        re.append(str('-1'))
print(*re)