#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<<endl; break; case '-': cout<<a - b<<endl; break; case '*': cout<<a * b<<endl; break; case '/': cout<<a / b<<endl; } }