#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<iomanip> #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; }