#include <iostream>

 #include <cstdio>

 #include <cmath>

 #define ERROR 1e-10

 using namespace std;

 int main(){

     int n, x, y;

     int dis, step;

     while( scanf( "%d", &n ) != EOF ){

         for( int i =  ; i < n ; i++ ){

             scanf( "%d%d", &x, &y );

             dis = y-x;

             if( dis ==  ){

                 printf( "0\n" );

                 continue;

             }

             step = (int)(sqrt((double)dis)+ERROR);

             if( step * step == dis ) step = step *  - ;

             else if( step * step + step < dis ) step = step *  + ;

             else step = step * ;

             printf( "%d\n", step );

         }

     }

     return ;

 }

 #include <iostream>

 using namespace std;

 int main()

 {

     int x, y;

     int testCases;

     int min_steps = ;

     cin >> testCases;

     while(testCases --)

     {

         cin >> x >> y;

         int difference = y - x;

         min_steps = ;

         if(difference != )

         {

             int sumOfSteps = ;

             int z = ; //divided by 2, it represents the size if the next step

             while(difference > sumOfSteps)

             {

                 sumOfSteps += (z / ); // next step

                 min_steps ++;

                 z++;

             }

         }

         cout << min_steps << endl;

     }

     return ;

 }

 #include<cstdio>

 #include<cmath>  

 int main(void)

 {

     int t, x, y, diff, n;

     scanf("%d", &t);

     while (t--)

     {

         scanf("%d%d", &x, &y);

         diff = y - x;

         if (diff == )

             puts("");

         else

         {

             n = (int)sqrt(diff);

             diff -= n * n;

             if (diff == )

                 printf("%d\n", (n << ) - );

             else if (diff <= n)

                 printf("%d\n", n << );

             else

                 printf("%d\n", (n << ) + );

         }

     }

     return ;

 }