#include<bits/stdc++.h> using namespace std;
int main() { int n; cin >> n; int a, b, c; int s1 = 0; int s2 = 0; int s3 = 0; for (int i = 0; i != n; i++) { cin >> a >> b >> c; s1 = s1 + a; s2 = s2 + b; s3 = s3 + c; a = 0; b = 0; c = 0; } if(s1>s2 && s1>s3) { cout<<'A'<<' '<<s1; } else if(s2>s1 && s2>s3) { cout<<'B'<<' '<<s2; } else if(s3>s1 && s3>s2) { cout<<'C'<<' '<<s3; } return 0; }