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Problem 1802 Memory Control

## Problem Description

Memory units are numbered from 1 up to N. A sequence of memory units is called a memory block. The memory control system we consider now has four kinds of operations:

1. Reset Reset all memory units free.

2. New x Allocate a memory block consisted of x continuous free memory units with the least start number

3. Free x Release the memory block which includes unit x

4. Get x Return the start number of the xth memory block(Note that we count the memory blocks allocated from left to right)

Where 1<=x<=N.

All memory units are free at the beginning,and you are request to find out the output for M operations.

## Input

Input contains multiple cases. Each test case starts with two integer N,M(1<=N,M<=50000) ,indicating that there are N units of memory and M operations. Follow by M lines,each line contains one operation as describe above.

## Output

For each “Reset” operation, output “Reset Now”. For each “New” operation, if it’s possible to allocate a memory block, output “New at A”,where Ais the least start number,otherwise output “Reject New”. For each “Free” operation, if it’s possible to find a memory block occupy unit x, output “Free from A to B”,where A and B refer to the start and end number of the memory block,otherwise output “Reject Free”. For each “Get” operation, if it’s possible to find the xth memory blocks, output “Get at A”,where A is its start number,otherwise output “Reject Get”. Output one blank line after each test case.

## Sample Input

6 10 New 2 New 5 New 2 New 2 Free 3 Get 1 Get 2 Get 3 Free 3 Reset

## Sample Output

New at 1 Reject New New at 3 New at 5 Free from 3 to 4 Get at 1 Get at 5 Reject Get Reject Free Reset Now

## Source

Multi-School Training Contest - FOJ Site #7

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