#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() 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; }