Getting signal 15 as error

#1

while running my code i am getting error
signal 15 and time limit exceeded on wall time.

#2

Please post your code here.

#3

import java.util.*;
public class Main {

public static void main(String args[]) {
	Scanner scn = new Scanner(System.in); 
	int n = scn.nextInt();
	//int []p=new int[1000000];
	int [] p=new int[1000000];
	int i;
	for(i=0;i<1000000;i++)
	p[i]=0;
	prime_sieve(p);
	int[] sum = new int[1000000];
	int next=0;
	int prev=0;
	while(next<999999)
	{
		sum[i]=p[next]+p[prev];
		prev=next;
		next=next+1;
		i++;
	}
	 i=1;
	while(i<=n)
	{
		int a=scn.nextInt();
		int b=scn.nextInt();
		int count= sum[b]-sum[a-1];
		System.out.println(count);
		i++;
	}
	
}
public static void prime_sieve(int []p)
{
 int i=3;
	int  k,j;
	for(i=3;i<1000000;i=i+2)
	p[i]=1;
	for(i=3;i<1000000;i=i+2)
	{
		if(p[i]==1)
		{
			for(k=2*i;k<1000000;k=k+i)
			p[k]=0;
		}
	}
	p[2]=1;
	p[1]=p[0]=0;
	//return p;

}

}

#4

It should throw runtime error because before executing the while loop with the next and prev stuff, you should’ve set the value of I back to 1 but since you didn’t it should go out of bounds