#include <cstdint>
#include <iostream>
using namespace std;
int main() {
int32_t a;
cin >> a;
cout << (a ^ INT32_MIN);
return 0;
}
I2luY2x1ZGUgPGNzdGRpbnQ+CiNpbmNsdWRlIDxpb3N0cmVhbT4KdXNpbmcgbmFtZXNwYWNlIHN0ZDsKCmludCBtYWluKCkgewoJaW50MzJfdCBhOwogICAgY2luID4+IGE7CiAgICBjb3V0IDw8IChhIF4gSU5UMzJfTUlOKTsKCXJldHVybiAwOwp9