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using System;
using System.Collections;
using System.Linq;
namespace D11P2
{
class Program
{
/*
static string input = @"L.LL.LL.LL
LLLLLLL.LL
L.L.L..L..
LLLL.LL.LL
L.LL.LL.LL
L.LLLLL.LL
..L.L.....
LLLLLLLLLL
L.LLLLLL.L
L.LLLLL.LL";
*/
static string input = @"LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLL.LL.LLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLL.L.LLLLLLLLLLLLLLL.LLLL.LLL
.LLLLLLLL.LL.L.LLLLLLLLL.LLLLLLL.L.LLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLL.L.LLLLL.L.LLLLLLLLLLLLLLLLLL
LLLLLLLLL...LL.LLLLLLLL..LLLLLLLLL.L..LLLLLLLLLLLLLLLLLLLLLLLL.LLL..LLLLLLLLLLLLLLLLLLLLLLLLLLLL
LLLLLLL.LLLLLL.LLLLLLLLL.LL.LLLLLL.LLLLLLLL.LLLLLLLL.LLLLLLLL..LLLLL.LLLLLL...LLLLLLL.LLLLLLLLLL
LLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLLLLLLL.LLLL.LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLLLLLLLL.LL
LLLLLLL.LLLLLL.LLLLLLLL..LLLLLLLLL.LLLLLLL.LLLLLLLLLLLLLLLLLLL.LLLL.LLLLLLLLL.LLLL.LLLL.LLLLLL.L
.LLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLL.LLLL.LLLLLLLLL.LL.L.LLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLLLLLLL.LLL.LLLLLLLL.LLLLLLLLLLLLLL.LLLLLL.LL.LLLLLLLLL.LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLLLLL.LLLLL
LLL.LLLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLL.LLLLLLLL..L..LLLLLLL.LLLLLLL
L.....L..L....LLLL......L.L....LLLL..L...L..LL..........L...LL..LL.LLL..L.LL...LL.L...L.L....L..
LLLLLLLLL.LLLLLLLLLLL.LLLLLLLLLLLL.LLLLLL.L.LLLLLLLL.LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLL.LL.LL.LL.LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLL.LLLL.LLLLL.LLL.LLLL.LLLL.LLLLLL.L.LLL.LLLL.LLLLLL.LLLLLLL.LLLLLLLLL.LLLLL.L.L.LLLLLLLL
LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLL..LLLLLLLL.LLLLLLLLLLLLLL.LLL.LLL.L.LL.LLLLLL.LL.LLLLL
.L..L....LLL...LL.L.LL......L........LL...L..L..LL.......L....L.L.LLL......LL..L..L.....LLL.....
LLLLLLLLL.LLLLLLLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLLLLLLLLLLL.LLL.LLLL.LL.LLLLLLLLLLLLLLLL.LLLLL.LL
LLLLLL.LL.LLLLLLLLLLLLLL.LLLLLLLLL.LLL.LLLLLLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL
L.LLLLLLL..LLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLL..LLLLLL.L.LLLLLLLL
LL.LLLLLL..LLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLL.LLL.LLLLL.LLLL.L.LL.LLLL.LL.LLLLLL.LLLLLLLL
LL.LLLLLLLLLLL.LLLLL.LLL.LLLLLLLL..LLLLLLLL.LL..LLLL.LLLLLLLL..LLLLLLLLLLLLLLLLL.L.LLL..LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLL.LLLL.LLL.LLLLLLLL
LLLLLLL.L.LLLL.LLLLLLLLLL.LLLLL.LL.LLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLL.LLL.LLLLL.LLLL.LLLLLLLLLLLLL
LL.LLL....L....L.L....LL...L......L.....LL.LL.LLL....L.LL........L.LL..L.LLLL.LLL.LLLLLLL.L..L..
LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLL.LLL.LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLLLLLL.LLLLLLLLL.LLLLL.LLL.LLLLLLLL.LLLLLLLL.LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLL.LL.LLLLLLLL
LLLLL.LLL.LLLL.LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLL.LLLLLLLLL.LLLL.LLLLLLLLL.LLLLL.LLLLLLLLLLLL
LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.L.LLLLLLLLLL.LLL.L
LLLLLLLLL.LLLL.LLLLLL..L.LLLLLLLLLLL.LL.LLLLL.LLLLLL.LL.LLLLLL.LLLL.LLLLLLLLLLLL.LLLLLL.LLLLLLLL
LLLLLLLLL.LLLL.L.LLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLL
LLL.LLLLL.LLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLL.LLLL.LLLL.LLLLLL.LL.LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLL.LLLL.LLLLLLLLL.LL.LLLLLLLLLLL.LLLLLLLLL.LLLLLLLL
.L.LL....L.....LL...L.....LL..LL.........L.L..L.......LL...L.L......L........L...L.....L.....LL.
LLLLLLLLLLLLLL.LLLLLLL.L.LLLLLLLLL.LLLLLLLL.LLLLLLL..LLLLLLLLLLLLLL.LLLLLLLLL.LLL.LLLLL.LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLL
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLL.LLL.LL.LLLLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL..LLLLLLL
LLL.LLLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLL.LLLLLLLL
.LLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLL..LLL.LLLL.LLLLLLLL.LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLL.LLLLL.LLLLLLL.L.LLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLL.LLLL.LLLLL.LLL.LLLLLLLLL..LLLLLLL
L....L..L...L....L.....L...L...L......L.LL.L....L.L.......L.LL.LL.LL....L...LLL...LL...LLL...L.L
LLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLL.L.LLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLL.
LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLL..LLLLLLLLLLLLLLLL.LLLLLLLLL.L.LLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLL.LLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LL.LLLLLL.LLLLLLLL
LLLLLLLLLLLLLL.LLLLLLLLL.LLL.LLLLL.LLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLL.LLLLLLLLLLL.LLLLLLLL
.LLLLLLLL.LL.L.LLLLLLLLL.LLLLLLL...LLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLL.LLLLLLLLL..LLLLLLLL.LLLLLLLL
LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLL.LLLLL.LL.LLLLLLLLL.LLLLLLLLLLLLL.LLLL.LLLL.LLLLLLLLLLL.LLLLLL
LLLLLLLLL.LLLL.LLLLLLLLL.LLL.LLLLL.LLLLLLLL.LLLLLLLL.LLLLLLLLL.LLLL.L.LLLLLLL.LLLLLLLLL.LLLL.LLL
LL.LLLLLL.LL.L.L.LLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLL..LLLLLLL.
LLLLLLL.L.LLLL.LLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLL
LL......LLL.L......LL.LLL.....L..L.........L....L..L....L.L....L...L..L...L...L..L..L....L......
LLLLLLLLL.LLLLLLLLLLLLLL.L.L.LLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
LLLLLLLLLLLLL..LLLLLLLLLLLLLLL.LLL.LLLLLLLL.LLLLLLLL.LLLLLLL.L.LLLL.LLLLLLL.L.LLLLLLL.L.LLLLLLLL
LL.LL.LLLLLLLLLLLLLLLLLL.LLLLLLLLL..LLLLLLL.LLLLLLLL.LLLLLLLL..L.LLLLLLLLL.LLLLLLLLLLLL.LLLLLLL.
LLLL.LLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL.L.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLLL.LLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLL.LLLL.LLLLLLLLL.LLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLL
.LLLLLL.L.L...L.L.....L..L......LLL..L..L.L..LLL....LLL......L........LL..L.L....LL.L..L.L......
LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLLLLLLL.LLLLLLLLLL.LLLL.LL.L.L.LLLLLL..LLLLLLL.
LLLLLLLLLLLLLL.LLL.LLLLL.LLLLLLLLL.LLLLLLLL.LL.LLLL..LLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLLLLLLLLLLL
LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLL..LLLLL.LL.LLLLLLLLLLL.LLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLL.LLLL..LLLLLLLL.L.LLLLLLL.LLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLL..LLLLLLL
LLLLLLLLL.LL.L.LLLLL.LLL.LLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LL.LLLLL
....L.LLLLL......L.LL....L.L...L..LL...LLL.LLLL...LL.L.L....L.LL...L.......L...L.L..LL.........L
LLLLLL.LL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLL.LLLLLLLLLLLLLLL.L.LLLLLLLL.LLLLLLLL.LLLLLLLL
LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLL.LLL.LLLLLLLLLLLLLLLLLL.LL.LLLLLLLLLLL.LLLLLLLLLLLLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLL..LLLLLLLL.LLLLLLLLLL.LLL.LLL.LLLL.LLLLL.L.L.LLLLLLL.L.LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLL.L.LLLLLLLLL..LL.LLLL.LLL.LLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLL.LLLLLLLL
LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL
LL........L.....L....L..L...L.LLL........L.....L...L.......L.....L..L.L........L.L..L....LL.L.L.
LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLL.LLLL
LLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLL..LLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLL.LLLL.L.LL.LLLLLLLL.L.LLLLLL.LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLLLLLLLL.LL.L.LLLLLL.LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLLLL.LLLLLL
LLLLLLLLL.LLLL.LLLLLLLLL.LLLL.LLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLL.L.LL.LLLLLLLLLLLLLL.LLLLLLLLLLLLL
LLLLLLLLLLLLLL..LLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLL...LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLLL.LL.LLLLLLLL.LLLLL.LLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLL.
...........LL.L.L.LLL..LL.L..L...LL.L.L........LL.L..L.....L..L...L.L....L.LL..LL..L.L.LL..LL..L
LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLL.LL.LLLLLLLL.LLLLL.LLLLLLLLL.LLLLL.LL.LLLLLLLL.LLLLLLLLL.LLLL.LLLLLLL.L.L.LLLLLLL.LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLLL.L.LLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLL.LLLLLLLLL.LLL..LLLLLLLLL..LLLLLLLL.LLL.LLLL
LLLLLLLLLLLLLLLLLLLLLLLL.LLLLLL.LL.LLLLLLLL.LLLL.LLL.LLLLLLLLL.L.LLLLLLLLLLLL.LLLLLLLLLLLLLLLLLL
LLLLLLLLLLLLLLL.LLLLLLLL.LLL.LLLLLLLLLLLLLL.L.LLLLLL.LLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLLL.LLLLLLLL
LLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLL
LLLLLLLLL.LLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLL.L.LL..LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLL.LLLL..LLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLLL
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLL.LLLLLLLLLLLLLL.L.LLLLLLL..LLLLLLLLL.L.LL.LL
LLLLLLLLL.LLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLLL.LLLL.LLLLLLLLL.LLLLLLLLL.LLLL.L.L
LLLLLLLLL.LL.L.LLLLLLLLL.LLLLLL.LL.LLLLLLLL.LLLLLLLLLLLLLLLLLL.LLL.LLLLLLLLLLLLLLLLLLLL.LL..LLLL";
static CSeat[][] seats;
static int lines;
static int cols;
static void Main()
{
#region Parsing Seats
seats = new CSeat[input.Count(a => a == '\r') + 1][];
int l = 0;
foreach (string line in input.Split("\r\n"))
{
seats[l++] = CSeat.FromString(line);
}
lines = seats.Length;
cols = seats[0].Length;
#endregion
bool move;
do
{
#region Check directions
// Step 1 : Fill W, NW, N and NE following > and v
for (int i = 0; i < lines; i++)
{
for (int j = 0; j < cols; j++)
{
seats[i][j].Reset();
seats[i][j].FillDirection(i, j, CSeat.Direction.West);
seats[i][j].FillDirection(i, j, CSeat.Direction.NorthWest);
seats[i][j].FillDirection(i, j, CSeat.Direction.North);
seats[i][j].FillDirection(i, j, CSeat.Direction.NorthEast);
}
}
// Step 2 : Fill E, SE, S and SW following ^ and <
for (int i = lines - 1; i >= 0; i--)
{
for (int j = cols - 1; j >= 0; j--)
{
seats[i][j].FillDirection(i, j, CSeat.Direction.East);
seats[i][j].FillDirection(i, j, CSeat.Direction.SouthEast);
seats[i][j].FillDirection(i, j, CSeat.Direction.South);
seats[i][j].FillDirection(i, j, CSeat.Direction.SouthWest);
}
}
#endregion
move = false;
for (int i = 0; i < lines; i++)
{
for (int j = 0; j < cols; j++)
{
if (seats[i][j].Switch())
{
move = true;
}
}
}
}
while (move);
Console.WriteLine(seats.Sum(a => a.Count(b => b.Seat == '#')));
}
class CSeat
{
private byte directions = 0;
public char Seat { get; set; }
public char NewSeat { get; set; }
public bool NW { get { return directions.GetBit((int)Direction.NorthWest); } set { directions.SetBit((int)Direction.NorthWest, value); } }
public bool N { get { return directions.GetBit((int)Direction.North); } set { directions.SetBit((int)Direction.North, value); } }
public bool NE { get { return directions.GetBit((int)Direction.NorthEast); } set { directions.SetBit((int)Direction.NorthEast, value); } }
public bool E { get { return directions.GetBit((int)Direction.East); } set { directions.SetBit((int)Direction.East, value); } }
public bool SE { get { return directions.GetBit((int)Direction.SouthEast); } set { directions.SetBit((int)Direction.SouthEast, value); } }
public bool S { get { return directions.GetBit((int)Direction.South); } set { directions.SetBit((int)Direction.South, value); } }
public bool SW { get { return directions.GetBit((int)Direction.SouthWest); } set { directions.SetBit((int)Direction.SouthWest, value); } }
public bool W { get { return directions.GetBit((int)Direction.West); } set { directions.SetBit((int)Direction.West, value); } }
private int NbOccupied
{
get
{
return directions.PopCountBits();
}
}
public bool Switch()
{
switch (Seat)
{
case '.':
NewSeat = '.';
return false;
case 'L':
if (NbOccupied == 0)
{
NewSeat = '#';
return true;
}
else
{
NewSeat = 'L';
return false;
}
case '#':
if (NbOccupied >= 5)
{
NewSeat = 'L';
return true;
}
else
{
NewSeat = '#';
return false;
}
default:
return false;
}
}
public void Reset()
{
directions = 0;
Seat = NewSeat;
}
public void FillDirection(int i, int j, Direction direction)
{
CSeat other;
switch (direction)
{
case Direction.NorthWest:
if (i == 0 || j == 0) NW = false;
else
{
other = seats[i - 1][j - 1];
switch (other.Seat)
{
case '#':
NW = true;
break;
case 'L':
NW = false;
break;
case '.':
NW = other.NW;
break;
}
}
break;
case Direction.North:
if (i == 0) N = false;
else
{
other = seats[i - 1][j];
switch (other.Seat)
{
case '#':
N = true;
break;
case 'L':
N = false;
break;
case '.':
N = other.N;
break;
}
}
break;
case Direction.NorthEast:
if (i == 0 || j == cols - 1) NE = false;
else
{
other = seats[i - 1][j + 1];
switch (other.Seat)
{
case '#':
NE = true;
break;
case 'L':
NE = false;
break;
case '.':
NE = other.NE;
break;
}
}
break;
case Direction.East:
if (j == cols - 1) E = false;
else
{
other = seats[i][j + 1];
switch (other.Seat)
{
case '#':
E = true;
break;
case 'L':
E = false;
break;
case '.':
E = other.E;
break;
}
}
break;
case Direction.SouthEast:
if (i == lines - 1 || j == cols - 1) SE = false;
else
{
other = seats[i + 1][j + 1];
switch (other.Seat)
{
case '#':
SE = true;
break;
case 'L':
SE = false;
break;
case '.':
SE = other.SE;
break;
}
}
break;
case Direction.South:
if (i == lines - 1) S = false;
else
{
other = seats[i + 1][j];
switch (other.Seat)
{
case '#':
S = true;
break;
case 'L':
S = false;
break;
case '.':
S = other.S;
break;
}
}
break;
case Direction.SouthWest:
if (i == lines - 1 || j == 0) SW = false;
else
{
other = seats[i + 1][j - 1];
switch (other.Seat)
{
case '#':
SW = true;
break;
case 'L':
SW = false;
break;
case '.':
SW = other.SW;
break;
}
}
break;
case Direction.West:
if (j == 0) W = false;
else
{
other = seats[i][j - 1];
switch (other.Seat)
{
case '#':
W = true;
break;
case 'L':
W = false;
break;
case '.':
W = other.W;
break;
}
}
break;
}
}
public static CSeat[] FromString(string s)
{
CSeat[] seats = new CSeat[s.Length];
for (int i = 0; i < s.Length; i++)
{
seats[i] = new CSeat() { Seat = s[i], NewSeat = s[i] };
}
return seats;
}
public enum Direction
{
NorthWest,
North,
NorthEast,
East,
SouthEast,
South,
SouthWest,
West,
}
}
}
static class extensions
{
public static void SetBit(this ref byte aByte, int pos, bool value)
{
if (value)
{
//left-shift 1, then bitwise OR
aByte |= (byte)(1 << pos);
}
else
{
//left-shift 1, then take complement, then bitwise AND
aByte &= (byte)~(1 << pos);
}
}
public static bool GetBit(this byte aByte, int pos)
{
//left-shift 1, then bitwise AND, then check for non-zero
return ((aByte & (1 << pos)) != 0);
}
public static int PopCountBits(this byte aByte)
{
int c; // c accumulates the total bits set in aByte
for (c = 0; aByte > 0; c++)
{
aByte &= (byte)(aByte - 1); // clear the least significant bit set
}
return c;
}
}
} |
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