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- import java.util.Scanner;
- import java.util.ArrayList;
- public class untitled {
- public static void main (String[] args) {
- Scanner in = new Scanner(System.in);
- System.out.print("Введите количество городов: ");
- int number = in.nextInt();
- ArrayList<Integer> list = new ArrayList<>();
- for (int i = 0; i < number; i++) {
- System.out.print("Введите координаты города: ");
- int x = in.nextInt();
- int y = in.nextInt();
- list.add(x);
- list.add(y);
- }
- double length;
- int m = (number-1)*2;
- for (int i=0; i<m; i=i+2){
- int a = (list.get(i+2)-list.get(i));
- int b = (list.get(i+3)-list.get(i+1));
- length = Math.sqrt(Math.pow(a,2)+Math.pow(b,2));
- System.out.printf("%.2f", length);
- System.out.println();
- }
- }
- }
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