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; } real readReal() { return readToken.to!real; } 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)); } void main() { try { for (; ; ) { const X = readInt(); const Y = readInt(); int[] dxs, dys; foreach (dx; -2 .. +2 + 1) foreach (dy; -2 .. +2 + 1) { if (dx^^2 + dy^^2 == 0 || dx^^2 + dy^^2 == 5) { dxs ~= dx; dys ~= dy; } } const len = cast(int)(dxs.length); bool ans; foreach (i; 0 .. len) foreach (j; 0 .. len) foreach (k; 0 .. len) { ans = ans || (X == dxs[i] + dxs[j] + dxs[k] && Y == dys[i] + dys[j] + dys[k]); } writeln(ans ? "YES" : "NO"); } } catch (EOFException e) { } }