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