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) {
  }
}