#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;
 
int main() {
    int N;
    double S, V, T;
    const double g = 10.0;
 
    cin >> N >> S >> V >> T;
 
    double rad = S * M_PI / 180.0; // konversi derajat ke radian
    double H = (V * V * pow(sin(rad), 2)) / (2 * g);
 
    for (int i = 1; i <= N; i++) {
        int status = (H > T) ? 1 : 0;
        cout << status << ":" << fixed << setprecision(2) << H << endl;
    }
 
    return 0;
}

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