transponder

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

namespace transponder
{
    class transponder
    {
        struct ST {
            public DateTime Time;
            public int x;
            public int y;
        }
        static List<ST> ls = new List<ST>();
        static ST ls1;

        static int n = 2;
        static void exn(){
            if (n > 2) { Console.WriteLine(); }
            if (n == 3) n++;
            Console.WriteLine($"Exercise {n++}.");
        }

        static void ex1() {
            StreamReader sr = new StreamReader("signal.txt");

            while (!sr.EndOfStream) {
                var line = sr.ReadLine().Split();

                ls1.Time = new DateTime(1,1,1,Convert.ToInt16(line[0]),   //hour
                                              Convert.ToInt16(line[1]),   //min
                                              Convert.ToInt16(line[2]));  //sec
                ls1.x = Convert.ToInt16(line[3]);
                ls1.y = Convert.ToInt16(line[4]);

                ls.Add(ls1);
            }
            sr.Close();

            //foreach (var e in ls)
            //{
            //    Console.WriteLine($"{e.Time.ToLongTimeString()} {e.x} {e.y}");
            //}
        }
        static void ex2() {
            exn();
            Console.Write("Give the ordinal number of the signal: ");
            int numb = Convert.ToInt16(Console.ReadLine());
            Console.WriteLine($"x={ls[numb - 1].x} y={ls[numb - 1].y}");
        }
        static int interval(DateTime time1, DateTime time2) {
            //int timediff = Convert.ToInt16(time2 - time1).TotalSeconds;
            //return timediff;
            return (int)(time2 - time1).TotalSeconds;
        }
        static void ex4() {
            exn();
            DateTime first = ls[0].Time;
            DateTime last = ls[ls.Count-1].Time;
            int h, m, s, totalsec;
            totalsec = interval(first, last);
            h = totalsec / 3600;
            totalsec -= h * 3600;
            m = totalsec / 60;
            totalsec -= m * 60;
            s = totalsec;
            Console.WriteLine($"Time difference: {h}:{m}:{s}");
        }
        static void ex5() {
            exn();
            //int minx, maxx, miny, maxy;
            //maxx=minx = ls[0].x;
            //maxy=miny = ls[0].y;
            //foreach (var e in ls){
            //    if (e.x<minx) minx = e.x;
            //    if (e.x>maxx) maxx = e.x;
            //    if (e.y<miny) miny = e.y;
            //    if (e.y>maxy) maxy = e.y;
            //}
            //Console.WriteLine($"Bottom left: {minx};{miny}, top right: {maxx};{maxy}");
            Console.WriteLine($"Bottom left: {ls.Min(c => c.x)},{ls.Min(c => c.y)} top right: {ls.Max(c => c.x)};{ls.Max(c => c.y)}");
        }
        static void ex6() {
            exn();
            double distance = 0;
            for (int i = 0; i < ls.Count-1; i++){
                double dx = (ls[i].x - ls[i+1].x);
                double dy = (ls[i].y - ls[i+1].y);
                distance += Math.Sqrt(dx*dx+dy*dy);
            }
            Console.WriteLine($"Total distance: {distance:F3} units");
        }
        static void ex7() {
            StreamWriter sw = new StreamWriter("missing.txt");
            int timediff, corddiffx, corddiffy, timecount, cordcount;
            for (int i = 0; i < ls.Count - 1; i++){
                timediff = interval(ls[i].Time, ls[i + 1].Time)/60;
                corddiffx = (ls[i].x - ls[i + 1].x);
                corddiffy = (ls[i].y - ls[i + 1].y);
                timecount = cordcount = 0;
                if (timediff > 5) {
                    timecount += (timediff-1) / 5;
                }
                if (corddiffx>10){
                    cordcount += (corddiffx-1) / 10;
                }
                if (corddiffy>10){
                    cordcount += (corddiffy - 1) / 10;
                }
                if (timecount != 0 || cordcount != 0)
                {
                    sw.Write(ls[i+1].Time.ToString("%H %m %s "));
                    if (timecount>cordcount){
                        sw.WriteLine($"time difference {timecount}");
                    }
                    else
                    {
                        sw.WriteLine($"coordinate difference {cordcount}");
                    }
                    sw.WriteLine();
                }
            }
            sw.Close();
        }

        static void Main(string[] args)
        {
            ex1();
            ex2();
            //ex3();
            ex4();
            ex5();
            ex6();
            ex7();

            Console.ReadKey();
        }
    }
}
/*
3 11 19 122 644
3 16 19 120 643
3 21 19 126 639
3 26 19 131 641
3 27 55 124 651
3 31 50 134 649
3 36 50 126 650
3 41 50 129 648
3 46 50 129 647
3 50 22 119 653
3 55 22 111 662
3 55 33 101 669
4 0 33 99 677
4 5 33 91 672
4 10 33 89 670
4 15 33 85 668
4 25 33 86 671
4 30 33 83 680
4 35 33 80 677
4 40 33 88 686
4 45 33 87 690
4 50 33 81 698
4 55 33 74 678
5 5 33 78 684
5 10 33 73 690
5 12 42 70 680
5 17 42 75 687
5 22 42 75 695
5 27 42 68 701
5 32 42 65 694
5 37 42 72 698
5 42 42 76 692
5 47 42 71 699
5 52 42 71 701
5 57 42 77 704
6 2 42 73 709
6 7 42 76 713
6 22 42 94 724
6 32 42 82 698
6 37 42 74 691
6 42 42 81 695
6 47 42 85 692
6 52 42 88 684
6 57 42 95 679
7 2 42 96 682
7 7 42 99 678
7 12 42 104 676
7 17 42 104 682
7 22 42 103 676
7 27 42 94 670
7 31 44 88 660
7 36 44 87 653
7 41 44 85 660
7 46 44 93 656
7 51 44 100 656
7 56 44 96 660
8 1 44 95 662
8 6 44 94 664
8 11 44 87 673
8 16 44 94 665
8 21 44 95 663
8 26 44 104 663
8 31 44 104 658
8 36 44 104 655
8 37 26 112 665
8 42 26 112 674
8 43 29 102 683
8 48 29 110 687
8 53 29 114 692
8 58 29 112 692
9 3 29 112 691
9 8 29 110 693
9 10 1 120 693
9 15 1 111 691
9 20 1 109 685
9 24 10 99 682
9 29 10 100 682
9 30 27 110 690
9 35 27 117 684
9 40 27 119 675
9 45 27 118 682
9 50 27 121 684
9 55 27 126 690
10 0 27 123 689
10 5 27 119 694
10 10 27 127 685
10 15 27 121 694
10 20 27 125 700
10 25 27 129 703
10 30 27 125 702
10 35 27 123 707
10 38 59 113 705
10 43 59 109 700
10 44 45 111 690
10 46 26 121 690
10 47 50 111 696
10 48 17 121 687
10 51 38 131 696
10 56 38 135 698
11 1 38 140 693
11 6 38 141 694
11 11 38 143 696
11 16 38 136 688
11 21 38 132 687
11 26 38 128 679
11 31 38 122 683
11 34 19 132 674
11 39 19 139 665
11 40 48 147 675
11 43 45 137 673
11 48 45 133 678
11 49 59 143 679
11 54 59 136 683
11 56 52 126 682
12 1 52 134 676
12 2 46 124 674
12 7 46 123 681
12 12 46 116 681
12 17 46 109 672
12 22 46 114 675
12 26 29 113 665
12 31 29 116 663
12 36 29 112 662
12 41 29 106 664
12 41 32 113 674
12 41 48 123 683
12 46 48 114 687
12 51 39 104 677
12 56 39 103 686
13 1 39 109 690
13 5 53 119 699
13 9 40 109 706
13 14 40 112 708
13 19 40 110 699
13 24 40 113 692
13 29 40 114 700
13 34 40 108 691
13 39 40 99 682
13 44 40 95 680
13 48 25 89 690
13 53 25 84 687
13 58 25 79 685
14 3 25 83 678
14 8 25 83 672
14 11 49 83 662
14 16 49 92 663
14 21 49 100 660
14 26 49 97 661
14 31 49 100 658
14 36 49 104 666
14 41 49 110 664
14 46 49 102 663
14 51 49 102 659
14 51 50 108 669
14 56 50 107 672
14 58 31 103 682
15 3 31 95 682
15 8 31 99 678
15 13 31 98 680
15 18 31 101 673
15 23 31 96 666
15 26 18 92 676
15 31 18 100 679
15 31 51 98 689
15 36 1 95 679
15 41 1 87 676
15 46 1 88 675
15 51 1 89 671
15 56 1 86 677
16 1 1 88 682
16 5 16 83 672
16 10 16 82 664
16 15 16 81 666
16 20 16 74 661
16 25 16 67 661
16 27 36 69 651
16 32 36 74 642
16 37 36 70 649
16 42 36 76 656
16 47 36 73 659
16 52 36 82 662
16 57 36 78 662
17 2 36 72 662
17 6 34 69 672
17 11 34 78 675
17 15 7 75 685
17 16 19 85 683
17 21 19 85 688
17 24 20 76 678
17 29 20 71 671
17 30 3 72 661
17 31 4 82 670
17 36 4 89 664
17 41 4 83 666
17 46 4 77 670
17 51 4 85 671
17 56 4 77 673
18 1 4 70 670
18 5 52 73 680
18 10 52 69 688
18 15 52 70 680
18 20 52 68 682
18 25 52 65 685
18 30 52 58 692
18 35 52 62 689
18 40 52 57 694
18 44 20 52 684
18 49 20 46 682
18 54 20 45 681
18 59 20 49 672
19 4 20 44 678
19 9 20 42 669
19 14 20 35 662
19 19 20 30 665
19 22 45 20 671
19 27 45 14 670
19 32 45 6 673
19 37 45 6 669
19 42 45 5 676
19 47 45 12 681
19 52 45 20 689
19 57 45 26 685
20 0 34 27 695
20 4 31 17 700
20 9 31 13 699
20 14 31 17 699
20 19 31 20 705
20 24 31 26 712
20 29 31 25 708
20 33 24 20 718
20 38 24 29 725
20 43 24 29 723
20 48 24 20 726
20 53 24 23 717
20 55 40 17 727
21 0 40 21 721
21 5 40 13 727
21 10 40 4 722
21 15 40 11 721
21 20 40 12 718
21 25 40 19 711
21 30 40 13 720
21 33 27 21 710
21 38 27 27 719
21 43 27 29 714
21 48 27 31 708
21 50 21 40 698
21 53 59 50 706
21 58 59 44 713
22 3 59 36 713
*/