x-wangziji 2022-05-01 13:58:34 5 返回题目
''' #include <bits/stdc++.h> using namespace std; long long a, b; int main() { cin >> a >> b; if (a < -1) cout << "no"; else if (a > 1) cout << "no"; else if (b > 1) cout << "no"; else if (b < -1) cout << "no"; else cout << "yes"; return 0; }
