#include <iostream>
#include <cmath>
#include <iomanip> // untuk setprecision
 
using namespace std;
 
int main() {
    double v, angle_deg;
    const double g = 10;
 
    // Input kecepatan awal dan sudut dalam derajat
    cin >> v >> angle_deg;
 
    // Konversi sudut ke radian
    double angle_rad = angle_deg * M_PI / 180.0;
 
    // Hitung jarak horizontal maksimum
    double range = (v * v * sin(2 * angle_rad)) / g;
 
    // Tampilkan hasil dengan 1 angka di belakang koma
    cout << fixed << setprecision(1) << range << endl;
 
    return 0;
}
 

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37
10