17

#include <iostream>
#include <cmath>
using namespace std;

int main() {
    float x,y,a;
    cin >> x >> y;
    if ((cos(x)==x/3) || (x<0))
    cout<<"Решений нет";
    else { a=((x*log(x))+(y/(cos(x)-(x/3))));
    cout<<a;}
    return 0;
}