prithivMLmods/Coder-Stat

1 2<script type="text/x-mathjax-config">3  MathJax.Hub.Config({ tex2jax: { inlineMath: [["$","$"], ["\\(","\\)"]], processEscapes: true }});4</script>5<script type="text/javascript" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-MML-AM_CHTML">6</script>7 8<H1>Physical Experiments</H1>9 10<p>11Ignoring the air resistance, velocity of a freely falling object $v$ after $t$ seconds and its drop $y$ in $t$ seconds are represented by the following formulas:<br/>12<br/>13$ v = 9.8 t $<br/>14$ y = 4.9 t^2 $<br/>15</p>16<!--17<center><img src="https://judgeapi.u-aizu.ac.jp/resources/images/IMAGE1_physical"></center>18-->19 20<p>21A person is trying to drop down a glass ball and check whether it will crack. Your task is to write a program to help this experiment.22</p>23 24<p>25You are given the  minimum velocity to crack the ball. Your program should print the lowest possible floor of a building to crack the ball. The height of the $N$ floor of the building is defined by $5 \times N - 5$.26</p>27 28 29<H2>Input</H2>30 31<p>32The input consists of multiple datasets. Each dataset, a line, consists of the minimum velocity <i>v</i> (0 &lt; <i>v</i> &lt 200) to crack the ball. The value is given by a decimal fraction, with at most 4 digits after the decimal point. The input ends with EOF. The number of datasets is less than or equal to 50.33</p>34 35<H2>Output</H2>36 37<p>38For each dataset, print the lowest possible floor where the ball cracks.39</p>40 41<H2>Sample Input</H2>42 43<pre>4425.44525.446</pre>47 48<H2>Output for the Sample Input</H2>49 50<pre>51852853</pre>54 55 56