subarray with given sum

#User function Template for python3

#Function to find a continuous sub-array which adds up to a given number.
class Solution:
    def subArraySum(self,arr, n, s):
        l,r,sum=0,1,arr[0]
        while r<=n:
            while sum>s:
                sum-=arr[l]
                l+=1
            if sum==s:
                return [l+1,r]
                break
            else:
                if r<n:
                    sum+=arr[r]
            r+=1
        if r>n:
            return [-1]



#{
#  Driver Code Starts
#Initial Template for Python 3

import math

def main():
        T=int(input())
        while(T>0):

            NS=input().strip().split()
            N=int(NS[0])
            S=int(NS[1])

            A=list(map(int,input().split()))
            ob=Solution()
            ans=ob.subArraySum(A, N, S)

            for i in ans:
                print(i, end=" ")

            print()

            T-=1


if __name__ == "__main__":
    main()
# } Driver Code Ends