#include <cmath>
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
int c=0;
float x, y;
for (x=.3; x<=5; x+=.1)
{
y=cos(pow(x,2))*exp(-x);
if (y<0) c++;
cout<<"x="<<fixed<<setprecision(2)<<x<<" y="<<y<<endl;
}
cout<<c<<'\n';
cin.get();
return 0;
}