#include <iostream>
#include <math.h>
using namespace std;
int main() {
double x, f;
cin>>x;
if (x> 0) { f=tan(exp(pow(x, 4)) + 1); }
else if (x<=0) { f=sin(pow(x, 9) + cos(pow(x, 9))); }
cout<<"Ответ: f="<<pow(x, 4);
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8bWF0aC5oPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwogCmludCBtYWluKCkgewoJZG91YmxlIHgsIGY7CiAgICBjaW4+Png7CiAKIAlpZiAgICAgICh4PiAwKSB7IGY9dGFuKGV4cChwb3coeCwgNCkpICsgMSk7CX0KIAllbHNlIGlmICh4PD0wKSB7IGY9c2luKHBvdyh4LCA5KSArIGNvcyhwb3coeCwgOSkpKTsgfQogCiAgICBjb3V0PDwi0J7RgtCy0LXRgjogZj0iPDxwb3coeCwgNCk7CglyZXR1cm4gMDsKfQ==