#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 num1,num2; cin>>num1>>op>>num2; switch(op){ case '+': cout<<num1 + num2; break; case '-': cout<<num1 - num2; break; case '*': cout<<num1 * num2; break; case '/': cout<<num1 / num2; break; } return 0; }