#include <iostream>
using namespace std;
int main()
{
int A;int B;char S;cin >> A >> S >> B;
if (S == '+')
{
cout << A + B;
}
else if (S == '-')
{
cout << A - B;
}
else if (S == '*')
{
cout << A * B;
}
else if (S == '/')
{
cout << (A / B);
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKQp7CglpbnQgQTtpbnQgQjtjaGFyIFM7Y2luID4+IEEgPj4gUyA+PiBCOwoJaWYgKFMgPT0gJysnKQoJewoJCWNvdXQgPDwgQSArIEI7Cgl9CgllbHNlIGlmIChTID09ICctJykKCXsKCQljb3V0IDw8IEEgLSBCOwoJfQoJZWxzZSBpZiAoUyA9PSAnKicpCgl7CgkJY291dCA8PCBBICogQjsKCX0KCWVsc2UgaWYgKFMgPT0gJy8nKQoJewoJCWNvdXQgPDwgKEEgLyBCKTsKCX0KCXJldHVybiAwOwp9Cg==