#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,c; cin>>a>>b>>c; switch(b) { case '+': cout<<a+c; break; case '-': cout<<a-c; break; //×,÷ case '*': cout<<a*c; break; case '/': cout<<a/c; break; } return 0; }