Geeksforgeeks

X

DAYS

:

HOUR

:

MINS

:

SEC

Error

Copied to Clipboard

You are given **N **number of books. Every **ith** book has** Ai** number of pages and are arranged in **sorted order**.

You have to allocate contagious books to **M **number of students. There can be many ways or permutations to do so. In each permutation, one of the M students will be allocated the maximum number of pages. Out of all these permutations, the task is to find that particular permutation in which the maximum number of pages allocated to a student is minimum of those in all the other permutations and print this minimum value.

Each book will be allocated to exactly one student. Each student has to be allocated at least one book.

Note: Return **-1** if a valid assignment is not possible, and allotment should be in contiguous order (see the explanation for better understanding).

**Example 1:**

**Input:
**N = 4
A[] = {12,34,67,90}
M = 2
**Output:**113
**Explanation:**Allocation can be done in
following ways:{12} and {34, 67, 90}
Maximum Pages = 191{12, 34} and {67, 90}
Maximum Pages = 157{12, 34, 67} and {90}
Maximum Pages =113. Therefore, the minimum
of these cases is 113, which is selected
as the output.

**Example 2:**

**Input:
**N = 3
A[] = {15,17,20}
M = 2
**Output:**32
**Explanation: **Allocation is done as
{15,17} and {20}

**Your Task:**

You don't need to read input or print anything. Your task is to complete the function findPages() which takes 2 Integers **N**, and m and an array **A[]** of length **N** as input and returns the expected answer.

**Expected Time Complexity**: O(NlogN)

**Expected Auxilliary Space:** O(1)

**Constraints:**

1 <= N <= 10^{5}

1 <= A [ i ] <= 10^{6}

1 <= M <= 10^{5}

We are replacing the old Disqus forum with the new Discussions section given below.

Click here to view old Disqus comments.

Click here to view old Disqus comments.

Login to report an issue on this page.

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

YesLoading...

Allocate minimum number of pages

...