#include <iostream>
using namespace std;
 
int main() {
	// your code goes here
	int arr[5]={35,40,60,80,50};
	int start=80,end=265;
	cout<<"Enter the number of students/n";
	int k,ans;
	cin>>k;
	while(start<=end){
		int mid= start+(end-start)/2;
 
		int pages=0,count=1;
		for(int i=0;i<5;i++){
			pages+=arr[i];
			if(pages> mid){
				count++;
				pages=arr[0];
			}
		}
 
		if(count<=k){
			ans=mid;
			end=mid-1;
		}else{
			start=mid+1;
		}
	}
	cout<<ans;
	return 0;
}

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

Mw==

3