#include<iostream> using namespace std; int main() { int num1,num2; char op; cin>>num1>>op>>num2; switch(op){ case '+': cout<<num1+num2<<endl; break; case '-': cout<<num1-num2<<endl; break; case '*': cout<<num1*num2<<endl; break; case '/': cout<<num1/num2<<endl; break; } return 0; }