L3-013 非常弹的球
初速度:\(v = \sqrt{\cfrac{2 * E}{m}};\)
竖直速度:\(v_y = v \,sin(ans) = g * t\)
水平距离:\(s = v_x * 2t = v \, cos(ans) * 2t = \cfrac{2Esin(2ans)}{mg}\)
#include <bits/stdc++.h>
using namespace std;
int main() {
double m, g = 9.8, p;
cin >> m >> p;
m = m / 100.0;
double s = 1e9;
double res = 0;
double E = 1000.0;
while (s > 1e-8) {
res += (s = 2 * E / (m * g));
E = E - (E * (p / 100.0));
}
cout << fixed << setprecision(3) << res << "\n";
return 0;
}