#include<bits/stdc++.h>
#define int long long
using namespace std;
int a;
int b;
int n;
bool m=0;
int f=0;
int g;
bool c=0;
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>g;
	for(int i=1;i<=g;i++){
		cin>>n;
		for(int j=1;j<=n;j++){
		cin>>a;
		cin>>b;
		int sum;
		sum=f-a;
		int h=sum;
		int t=b;
		if(sum=0){}
		if(abs(h)>t){
			c=1;
		} 
		f=a;
		if(j==n&&c==0){
			cout<<"Abletocatch"<<endl;
			c=0; 
			f=0;
		}
		if(j==n&&c==1){
			cout<<"Notabletocatch"<<endl; 
			c=0;
			f=0;
		}
	}
	
	} 
	
	return 0;
}