import std.conv, std.functional, std.range, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons; import core.bitop; class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; } int readInt() { return readToken.to!int; } long readLong() { return readToken.to!long; } string COLOR(string s = "") { return "\x1b[" ~ s ~ "m"; } bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } } bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } } int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; } int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); } int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); } /* lattice by (A, B), (-B, A) one per each square of area (A^2 + B^2) (x, y) in the lattice A: [x, x+A] * [y, y+B] B: enclosed by [(x+As-Bt), (x+As-Bt)+A] * [(y+Bs+At), (y+Bs+At)+B] (0 <= s,t <= 1) [x+A-B, x+A] * [y+B, y+B+A] */ void main() { try { for (; ; ) { const A = readInt; const B = readInt; const M = A^^2 + B^^2; debug { writeln([A, B, M]); } int mod(int r) { return ((r %= M) < 0) ? (r + M) : r; } foreach (i; 0 .. M) { const x = mod(A * i); const y = mod(B * i); writeln(x, " ", y); } foreach (i; 0 .. M) { const x = mod(A * i + A - B); const y = mod(B * i + B); writeln(x, " ", y); } } } catch (EOFException e) { } }