Problem of the day
Each pair should be sorted i.e the first value should be less than or equals to the second value.
Return the list of pairs sorted in non-decreasing order of their first value. In case if two pairs have the same first value, the pair with a smaller second value should come first.
The first line of input contains two space-separated integers 'N' and 'S', denoting the size of the input array and the value of 'S'.
The second and last line of input contains 'N' space-separated integers, denoting the elements of the input array: ARR[i] where 0 <= i < 'N'.
Print 'C' lines, each line contains one pair i.e two space-separated integers, where 'C' denotes the count of pairs having sum equals to given value 'S'.
You are not required to print the output, it has already been taken care of. Just implement the function.
1 <= N <= 10^4
-10^5 <= ARR[i] <= 10^5
-2 * 10^5 <= S <= 2 * 10^5
Time Limit: 1 sec
5 5
1 2 3 4 5
1 4
2 3
Here, 1 + 4 = 5
2 + 3 = 5
Hence the output will be, (1,4) , (2,3).
5 0
2 -3 3 3 -2
-3 3
-3 3
-2 2