import std.stdio, std.string, std.conv, std.algorithm, std.numeric;
import std.range, std.array, std.math, std.typecons, std.container, core.bitop;


void main() {
    auto h = new int[](3), w = new int[](3);
    dchar[] c = ['A', 'B', 'C'];

    iota(3).each!(i => scan(h[i], w[i]));
    w[] *= -1;

    zip(h, w, c).sort!"a > b"();

    writefln("%(%c\n%)", c);
}



void scan(T...)(ref T args) {
    string[] line = readln.split;
    foreach (ref arg; args) {
        arg = line.front.to!(typeof(arg));
        line.popFront();
    }
    assert(line.empty);
}



void fillAll(R, T)(ref R arr, T value) {
    static if (is(typeof(arr[] = value))) {
        arr[] = value;
    }
    else {
        foreach (ref e; arr) {
            fillAll(e, value);
        }
    }
}