#include<iostream>
using namespace std;
int a[65540];
int main(){
	int i=1;
	while(a[i-1]>=0){
		if(i%2)
			a[i]=(i+1)*(i+1)/4;
		else a[i]=i*(i+2)/4;
		i++;}
	int j,n,x,y,d;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>x>>y;
		if(x==y) {cout<<0<<endl;continue ;}
		d=y-x;
		j=1;
		while(d>a[j]) j++;
		cout<<j<<endl;
	}
}