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## Discussion of Problem 1020. Rope

Why Runtime error on test 4??
Posted by FromNothingToFinal 31 Oct 2018 22:13
public class Problem {

public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int r = sc.nextInt();
double l = 0;
if (n != 1) {
double x1 = sc.nextDouble();
double y1 = sc.nextDouble();
double memoryX = x1, memoryY = y1;
for (int i = 1; i <= n; i++) {
if (i == n) {
l += Math.sqrt((memoryX - x1) * (memoryX - x1) + (memoryY - y1) * (memoryY - y1));
continue;
}
double x = sc.nextDouble();
double y = sc.nextDouble();
l += Math.sqrt((x - memoryX) * (x - memoryX) + (y - memoryY) * (y - memoryY));
memoryX = x;
memoryY = y;
}
}
l += 2*Math.PI*r;
System.out.printf("%.2f", l);
sc.close();
}

}
Re: Why Runtime error on test 4??
Posted by roman velichkin 10 Nov 2019 19:07