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-----------------------------------author:-bhanu_017--------------------------------------------
1ST QUESTION:-import java.util.*;
import java.lang.*;
import java.io.*;

class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc=new Scanner(System.in);
		int a=sc.nextInt();
		int b=sc.nextInt();
		int c=sc.nextInt();
		int d=15-a-b-c;
		System.out.println(d);
	}
}


2ND QUESTION:-import java.util.*;
import java.lang.*;
import java.io.*;

class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		while(t-->0)
		{
		    int a=sc.nextInt();
		    int b=sc.nextInt();
		    int c=sc.nextInt();
		    int m=sc.nextInt();
		    if(a>=b&&a-b<=m)
		    {
		        System.out.println("YES");
		    }
		   else  if(a>=c&&a-c<=m)
		    {
		        System.out.println("YES");
		    }
		    else if(b>=a&&b-a<=m)
		    {
		        System.out.println("YES");
		    }
		   else  if(b>=c&&b-c<=m)
		    {
		        System.out.println("YES");
		    }
		    else if(c>=a&&c-a<=m)
		    {
		        System.out.println("YES");
		    }
		   else  if(c>=b&&c-b<=m)
		    {
		        System.out.println("YES");
		    }
		    else 
		    {
		        System.out.println("NO");
		    }
		}
	}
}


3RD QUESTION:-
import java.util.*;
import java.lang.*;
import java.io.*;

class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		while(t-->0)
		{
		    int[] players=new int[16];
		    int[] ans=new int[16];
		    for(int i=0;i<16;i++)
		    {
		        players[i]=sc.nextInt();
		    }
		    for(int i=0;i<16;i++)
		    {
		        int curr=players[i];
		        int count=0;
		        for(int num:players)
		        {
		            if(curr>=num)count++;
		        }
		        if(count>1&&count<4)
		        {
		            ans[i]=1;
		        }
		        else if(count>=4&&count<8)ans[i]=2;
		        else if(count>=8&&count<16)ans[i]=3;
		        else if(count==16)ans[i]=4;
		        else ans[i]=0;
		    }
		    for(int num:ans)
		    {
		        System.out.print(num+" ");
		    }
		}
	}
}

//  7 9 15 

// 22 18 16 4 2 20 5 10 


4TH QUESTION:-
import java.util.*;
import java.lang.*;
import java.io.*;

class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		while(t-->0)
		{
		    int n=sc.nextInt();
		    for(int i=1;i<=n/2;i++)
		    {
		        System.out.print(n-i+1+" ");
		        System.out.print(i+" ");
		    }
		    if(n%2!=0)
		    {
		        System.out.print(n/2+1+" ");
		    }
		    System.out.println();
		}
	}
}

5TH QUESTION:-import java.util.*;
import java.lang.*;
import java.io.*;

class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
	
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		while(t-->0)
		{
		    int n=sc.nextInt();
		    int[] arr=new int[n];
		    for(int i=0;i<n;i++)
		    {
		        arr[i]=sc.nextInt();
		    }
		    int[] psum=new int[n];
		    int[] ssum=new int[n];
		    psum[0]=0;
		    for(int i=1;i<n;i++)
		    {
		        int extra=arr[i-1];
		        psum[i]=psum[i-1]+extra;
		    }
		    ssum[n-1]=0;
		    for(int i=n-2;i>=0;i--)
		    {
		        int extra=arr[i+1];
		        ssum[i]=ssum[i+1]+extra;
		    }
		    int ans=0;
		    for(int i=0;i<n;i++)
		    {
		        if(arr[i]==0)
		        {
		            if(Math.abs(psum[i]-ssum[i])==0)ans+=2;
		            else if(Math.abs(psum[i]-ssum[i])==1)ans+=1;
		            else ans+=0;
		        }
		    }
		    System.out.println(ans);
		}
	}
}



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