Few test cases got failed

#1

I try this code using binary search but some of the test cases got failed. I am not able to find errors in my code
My code:

import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner scn = new Scanner(System.in);
int numofpainter = scn.nextInt();
int numofboard = scn.nextInt();
int[] boards = new int[numofboard];

	for(int i=0;i<boards.length;++i)
	{
		boards[i] = scn.nextInt();
	}
	Arrays.sort(boards);
	int lo = boards[boards.length-1];
	int hi = sum(boards);
	int midtime =0;
	int ans =0;
	while(lo<=hi)
	{
		midtime = lo +((hi-lo)/2);
		if(numofpaintersrequired(boards, midtime)<= numofpainter)
		{
		   ans = midtime;
		   hi = midtime-1;
		}else {
			lo = midtime+1;
		}
	}
	System.out.println(ans);
}
public static int sum(int[]boards)
{
	int sum=0;
	for(int i=0;i<boards.length;++i)
	{
		sum+=boards[i];
	}
	return sum;
}

public static int numofpaintersrequired(int[]board,int timegiven)
{int painter =1;
int timetakenbyonepainter =0;
for(int i=0;i<board.length;++i)
{
timetakenbyonepainter +=board[i];
if(timetakenbyonepainter>timegiven)
{
timetakenbyonepainter= board[i];
painter++;
}
}
return painter;
}
}

#2

your submissions show that you have scored 100! great job :slight_smile: if this solves your doubt please mark it as resolved