High School Xor Sum

Given an array Ar with N elements, indexed from 1 to N. Now you will be given two type of query- - 1 i j (Print the xor sum of all value from indx i to j ) - 2 i V (Change the ith value of the Ar by V. that means, after that operation Ar-i=V) Input The first line contains two integers N (1 - 1 i j - 2 i V Output For each 2nd type query you have to print a line containing the Xor Sum.