#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; }