#include <iostream>
#include <cmath>
using namespace std;
int main() {
float x, y;
cin >> x >> y;
if (x >= 0) {
if (y >= 0) {
if ((y < 1) && (x - 1 < y)) {
cout << "YES";
} else {
cout << "NO";
}
}
if (y < 0) {
if (pow(x, 2) + pow(y, 2) < 1) {
cout << "YES";
} else {
cout << "NO";
}
}
} else {
cout << "NO";
}
}
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