#include <iostream> #include <cmath> using namespace std; int main() { int a, n; cin >> a >> n; if (a == 0) { cout << 0 << endl; return 0; } if (a == 1) { cout << 1 << endl; return 0; } if (a == -1) { cout << (n % 2 == 0 ? 1 : -1) <<