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() { int n; scan(n); auto cnt = new int[](4); foreach (i ; 0 .. n) { int x, y; scan(x, y); cnt[((x & 1) << 1) ^ (y & 1)]++; } int turn; foreach (i ; 0 .. 4) { turn += (cnt[i] / 2); } writeln(turn & 1 ? "Alice" : "Bob"); } 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); } } }