#include <iostream> using namespace std; int main() { long long a, b; char op; cin >> a >> op >> b; if (op == '+') { cout << a + b << endl; } else if (op == '-') { cout << a - b << endl; } else if (op == '*') { cout << a * b << endl; } else if (op == '/') { cout << a / b << endl; } return 0; }