#include<bits/stdc++.h>
using namespace std;
const int N=1e3+10;
int Accepted(int a,int b,char c){//Accepted()
    if(c=='+')return a+b;
  else if(c=='-')return a-b;
	else if(c=='*')return a*b;
	else if(c=='/')return a/b;
	else if(c=='%')return a%b;
	return 0;
}
int main()
{int a,b;char c;cin >> a >> c >> b;cout << Accepted(a,b,c);return 0;}
//老登布置的作业系列

#include<bits/stdc++.h> using namespace std; const int N=1e3+10; const int INF=0x3f3f3f3f; int a,b; char c; int main() { cin>>a>>c>>b; switch(c) { case '+': cout<<a+b; break; case '-': cout<<a-b; break; case '': cout<<ab; } return 0; }