def subarray_sum(arr,sum):

dict1={}

curr_sum=0

for i in range(len(arr)):

curr_sum=curr_sum+arr[i]

if curr_sum ==sum:

print("Subarray starts from 0 to",i)

break

if curr_sum-sum in dict1:

print("Subarray starts from",dict1[curr_sum-sum]+1 ,"to" ,i)

break

dict1[curr_sum]=i

print("No subarray found")

arr=[1,4,20,3,10,5]

sum=33

print(subarray_sum(arr,sum))