import std.algorithm;
import std.array;
import std.conv;
import std.math;
import std.stdio;
import std.string;

void main() {
    auto xs = readln.split.map!(to!int);

    if (xs[1] % abs(xs[0]) == 0)
        writeln(xs[1] / xs[0]);
    else
        writeln("NO");
}