#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; long long d; char f; cin>>a>>f>>b; switch(f){ case '+': d=(long long)a+b; break; case '-': d=(long long)a-b; break; case '*': d=(long long)a*b; break; case '/': d=(long long)a/b; break; } cout<<d<<endl; return 0; }