#include <iostream> using namespace std; int main() { int a, b; char op; cin >> a >> op >> b; int res; switch (op) { case '+': res = a + b; break; case '-': res = a - b; break; case '*': res = a * b; break; case '/': res = a / b; break; case '%': res = a % b; break; default: res = 0; } cout << res << endl; return 0; }