#include <iostream>
using namespace std;
int main() {
int a,b;
char tt;
cin >> a >> tt >>b;
if(tt == '+'){
cout << a+b;
}
else if(tt == '-'){
cout << a-b;
}
else if(tt == '*'){
cout << (long long)a*b;
}
else {
float c = (float)a/b;
cout << c;
}
return 0;
}
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