#include <stdio.h>
    int main ()
    {
    	int n;int a,b;int sum;int flag;int i;
    	scanf("%d",&n);
    	while (n--)
    	{
    		sum=0;
    	 scanf ("%d %d",&a,&b);
    		flag=1;i=1;
            if (a==b)
				printf("0\n");
		else	
			
			for (;;)
    	  {  
              if (flag%2==1)

				sum=sum+i;
			  else 
			   {sum=sum+i;i=i+1;}
			 if (sum>=b-a)
			{printf("%d\n",flag);
    	  	     break;	}
		
    	   flag++;
    	  }		
    	  	
     }
    return 0;
    	}