Why Crash?
using System;
using System.Collections.Generic;
namespace Task_1020
{
public class Program
{
private struct Point {
public double X { get; set; }
public double Y { get; set; }
}
public static void Main() {
Point nR = Read();
double n = nR.X;
double r = nR.Y;
var points = new List<Point>((int)n);
for (int i = 0; i < n; i++) {
points.Add(Read());
}
double l = 2*Math.PI*r;
if (n == 1) {
Console.Write(String.Format("{0:f2}", l).Replace(',', '.'));
}
else {
l += ComputeLength(points[0], points[(int) (n - 1)]);
for (int i = 0; i < n - 1; i++) {
l += ComputeLength(points[i], points[i + 1]);
}
Console.Write(String.Format("{0:f2}", l).Replace(',', '.'));
}
}
private static double ComputeLength(Point p1, Point p2) {
return Math.Sqrt(Math.Pow(p1.X - p2.X, 2)
+ Math.Pow(p1.Y - p2.Y, 2));
}
private static Point Read () {
var twoNum = Console.ReadLine().Split(' ');
twoNum[0] = twoNum[0].Replace('.', ',');
twoNum[1] = twoNum[1].Replace('.', ',');
return new Point {X = Double.Parse(twoNum[0]), Y = Double.Parse(twoNum[1])};
}
}
}
Re: Why Crash?
and hey....
what is this??? "Console.Write(String.Format("{0:f2}", l).Replace(',', '.'));"
????
write just: Console.Write("{0:F2}", l);