#include <bits/stdc++.h>
using namespace std;
int main(){
	int i,sum=0;
	cin>>i;
	int o[i];
	for(int y=0;y<i;y++){
		int xx;
		cin>>xx>>o[y];
		sum+=o[y];
	}
	double pj=1.0*sum/i;
	for(int y=0;y<i;y++){
		printf("%d %d ",y+1,o[y]);
		if(o[y]-pj>=10)cout<<'A';
		else if(pj-o[y]>=10)cout<<'C';
		else cout<<"B";
		cout<<"\n";
	}
	return 0;
}

/**************************************************************
	Problem: 2025
	User: zhouhongyi
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2076 kb
****************************************************************/