0
1
mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-12-25 05:51:58 +00:00
OI-codes/Luogu/B2051/B2051.cpp

12 lines
184 B
C++

#include <bits/stdc++.h>
using namespace std;
int x, y;
int main() {
cin >> x >> y;
cout << (-1 <= x && x <= 1 && -1 <= y && y <= 1 ? "yes" : "no") << endl;
return 0;
}