using System; using System.Collections; using System.Collections.Generic; using System.Diagnostics; using System.IO; using System.Linq; using System.Numerics; using System.Text; using static System.Convert; using static System.Math; using static Constants; using static Extensions; using static MathExtensions; public static class Program { public static void Solve() { var (h, w) = (I, I); var a = new Grid2D(Repeat(h, () => Repeat(w, () => I).ToArray()).ToArray()); var q = I; var cnt0 = Point2D.InnerPoints(a.Size).Count(p => a[p] == 0); foreach (var i in Range(q)) { var (r, c, x) = (I - 1, I - 1, I); if (cnt0 == h * w && x == 1) { cnt0 = 0; continue; } else if (cnt0 == 0 && x == 0) { cnt0 = h * w; continue; } var src = new Point2D(r, c); var srcClr = a[src]; var bfs = a.BreadthFirstSearch(src, p0 => a.NeumannNeighborhood(p0) .Where(p1 => a[p1] == srcClr)); foreach (var state in bfs) { if (a[state.Point] == 0 && x == 1) cnt0--; if (a[state.Point] == 1 && x == 0) cnt0++; a[state.Point] = x; } } if (cnt0 == h * w) { foreach (var p in Point2D.InnerPoints(a.Size)) a[p] = 0; } else if (cnt0 == 0) { foreach (var p in Point2D.InnerPoints(a.Size)) a[p] = 1; } foreach (var i in Range(a.Height)) { foreach (var j in Range(a.Width)) Console.Write($"{a[i, j]} "); Console.WriteLine(); } } #region Scanners static TextScanner _ts; static char C => char.Parse(_ts.Next()); static string S => _ts.Next(); static int I => int.Parse(_ts.Next()); static long L => long.Parse(_ts.Next()); static BigInteger B => BigInteger.Parse(_ts.Next()); static double D => double.Parse(_ts.Next()); static decimal M => decimal.Parse(_ts.Next()); #endregion public static void Main() { var sw = new StreamWriter(Console.OpenStandardOutput()); sw.NewLine = "\n"; #if DEBUG sw.AutoFlush = true; #else sw.AutoFlush = false; #endif Console.SetOut(sw); _ts = new TextScanner(Console.In); Solve(); Console.Out.Flush(); } } public static partial class Extensions { } #pragma warning disable public struct Point2D : IEquatable { public Point2D(int y, int x) { this.Y = y; this.X = x; } public int Y { get; } public int X { get; } public static readonly Point2D Origin = new Point2D(0, 0); public static readonly IReadOnlyCollection NeumannNeighborhoodUnits = new[] { new Point2D(0, 1), new Point2D(1, 0), new Point2D(0, -1), new Point2D(-1, 0) }; public static readonly IReadOnlyCollection MooreNeighborhoodUnits = new[] { new Point2D(-1, -1), new Point2D(-1, 0), new Point2D(-1, 1), new Point2D(0, -1), new Point2D(0, 1), new Point2D(1, -1), new Point2D(1, 0), new Point2D(1, 1) }; public static IEnumerable InnerPoints(Point2D max) => InnerPoints(Origin, max); public static IEnumerable InnerPoints(Point2D min, Point2D max) { if (min.X > max.X || min.Y > max.Y) throw new ArgumentException(); for (var i = min.Y; i < max.Y; i++) for (var j = min.X; j < max.X; j++) yield return new Point2D(i, j); } public static int ManhattanDistance(Point2D source, Point2D target) => System.Math.Abs(source.X - target.X) + System.Math.Abs(source.Y - target.Y); public static int ChebyshevDistance(Point2D source, Point2D target) => System.Math.Max(System.Math.Abs(source.X - target.X), System.Math.Abs(source.Y - target.Y)); public static Point2D operator +(Point2D left, Point2D right) => new Point2D(left.Y + right.Y, left.X + right.X); public static Point2D operator -(Point2D left, Point2D right) => new Point2D(left.Y - right.Y, left.X - right.X); public static bool operator ==(Point2D left, Point2D right) => left.Equals(right); public static bool operator !=(Point2D left, Point2D right) => !left.Equals(right); public bool IsIn(Point2D max) => this.IsIn(Origin, max); public bool IsIn(Point2D min, Point2D max) { if (min.X > max.X || min.Y > max.Y) throw new ArgumentException(); return min.Y <= this.Y && this.Y < max.Y && min.X <= this.X && this.X < max.X; } public bool Equals(Point2D other) => this.Y == other.Y && this.X == other.X; public override bool Equals(object obj) => obj is Point2D ? this.Equals((Point2D)obj) : false; public override int GetHashCode() => (this.X << 16) ^ this.Y; public override string ToString() => $"{this.X} {this.Y}"; } public partial class Grid2D { private T[] _grid; public Grid2D(int height, int width) : this(new Point2D(height, width)) { } public Grid2D(Point2D size) { _grid = new T[size.Y * size.X]; this.Height = size.Y; this.Width = size.X; this.Size = size; } public Grid2D(T[][] grid) { this.Height = grid.Length; this.Width = grid.Max(r => r.Length); this.Size = new Point2D(this.Height, this.Width); _grid = new T[this.Height * this.Width]; for (var i = 0; i < grid.Length; i++) for (var j = 0; j < grid[i].Length; j++) _grid[i * this.Width + j] = grid[i][j]; } public int Height { get; } public int Width { get; } public Point2D Size { get; } public T this[int i, int j] { get { return _grid[i * this.Width + j]; } set { _grid[i * this.Width + j] = value; } } public T this[Point2D point] { get { return this[point.Y, point.X]; } set { this[point.Y, point.X] = value; } } } public partial class Grid2D { public IEnumerable NeumannNeighborhood(Point2D center) => this.Neighborhood(center, Point2D.NeumannNeighborhoodUnits); public IEnumerable MooreNeighborhood(Point2D center) => this.Neighborhood(center, Point2D.MooreNeighborhoodUnits); public IEnumerable Neighborhood(Point2D center, IEnumerable neighborhoodUnits) { foreach (var unit in neighborhoodUnits) { var nextPoint = center + unit; if (nextPoint.IsIn(this.Size)) yield return nextPoint; } } } public partial class Grid2D { public class SearchState { public SearchState(int distance, Point2D point, SearchState previous) { this.Distance = distance; this.Point = point; this.Previous = previous; } public int Distance { get; } public Point2D Point { get; } public SearchState Previous { get; } } public IEnumerable BreadthFirstSearch(Point2D source, Func> nextPointsSelector) => this.BreadthFirstSearch(source, nextPointsSelector, (s, t) => 1); public IEnumerable BreadthFirstSearch(Point2D source, Func> nextPointsSelector, Func distanceSelector) { var queue = new Queue(); var visited = new HashSet(); var firstState = new SearchState(0, source, null); queue.Enqueue(firstState); visited.Add(firstState.Point); while (queue.Any()) { var currentState = queue.Dequeue(); yield return currentState; foreach (var nextPoint in nextPointsSelector(currentState.Point)) { if (!visited.Add(nextPoint)) continue; var nextState = new SearchState(currentState.Distance + distanceSelector(currentState.Point, nextPoint), nextPoint, currentState); queue.Enqueue(nextState); } } } } public class TextScanner { private readonly TextReader _tr; public TextScanner(TextReader tr) { _tr = tr; } public string Next() { var sb = new StringBuilder(); int i; do { i = _tr.Read(); if (i == -1) throw new EndOfStreamException(); } while (char.IsWhiteSpace((char)i)); while (i != -1 && !char.IsWhiteSpace((char)i)) { sb.Append((char)i); i = _tr.Read(); } return sb.ToString(); } } public static class Constants { public const int AnswerToLifeTheUniverseAndEverything = 42; public const string Yes = "Yes"; public const string No = "No"; public const string YES = "YES"; public const string NO = "NO"; public const string Possible = "Possible"; public const string Impossible = "Impossible"; public const string POSSIBLE = "POSSIBLE"; public const string IMPOSSIBLE = "IMPOSSIBLE"; } [DebuggerStepThrough] public static partial class Extensions { public static void Answer(object value) { Console.WriteLine(value); Exit(0); } public static void Assert(bool condition) { if (!condition) throw new Exception("Assertion failed"); } public static string AsString(this IEnumerable source) => new string(source.ToArray()); public static Dictionary Bucket(this IEnumerable source) where T : IEquatable { var dict = new Dictionary(); foreach (var item in source) if (dict.ContainsKey(item)) dict[item]++; else dict[item] = 1; return dict; } public static int[] Bucket(this IEnumerable source, int maxValue, Func selector) { var arr = new int[maxValue + 1]; foreach (var item in source) arr[selector(item)]++; return arr; } public static IComparer CreateDescendingComparer() where T : IComparable => Comparer.Create((x, y) => y.CompareTo(x)); public static IEnumerable CumSum(this IEnumerable source) { var sum = 0; foreach (var item in source) yield return sum += item; } public static IEnumerable CumSum(this IEnumerable source) { var sum = 0L; foreach (var item in source) yield return sum += item; } public static void Exit(int exitCode) { Console.Out.Flush(); Environment.Exit(exitCode); } public static void ForEach(this IEnumerable source, Action action) { foreach (var item in source) action(item); } public static void ForEach(this IEnumerable source, Func func) { foreach (var item in source) func(item); } public static void ForEach(this IEnumerable source, Action action) { var i = 0; foreach (var item in source) action(item, i++); } public static void ForEach(this IEnumerable source, Func func) { var i = 0; foreach (var item in source) func(item, i++); } // [l, r) public static bool IsIn(this T value, T l, T r) where T : IComparable { if (l.CompareTo(r) > 0) throw new ArgumentException(); return l.CompareTo(value) <= 0 && value.CompareTo(r) < 0; } public static IEnumerable Range(int start, int end, int step = 1) { for (var i = start; i < end; i += step) yield return i; } public static IEnumerable Range(int end) => Range(0, end); public static void Repeat(int count, Action action) { for (var i = 0; i < count; i++) action(); } public static void Repeat(int count, Action action) { for (var i = 0; i < count; i++) action(i); } public static IEnumerable Repeat(int count, Func func) { for (var i = 0; i < count; i++) yield return func(); } public static IEnumerable Repeat(int count, Func func) { for (var i = 0; i < count; i++) yield return func(i); } public static void Swap(ref T x, ref T y) { var tmp = x; x = y; y = tmp; } } [DebuggerStepThrough] public static class MathExtensions { public static int DivCeil(int left, int right) => left / right + (left % right == 0 ? 0 : 1); public static long DivCeil(long left, long right) => left / right + (left % right == 0L ? 0L : 1L); public static int Gcd(int left, int right) { int r; while ((r = left % right) != 0) { left = right; right = r; } return right; } public static long Gcd(long left, long right) { long r; while ((r = left % right) != 0L) { left = right; right = r; } return right; } public static BigInteger Gcd(BigInteger left, BigInteger right) => BigInteger.GreatestCommonDivisor(left, right); public static int HighestOneBit(int x) { x |= x >> 01; x |= x >> 02; x |= x >> 04; x |= x >> 08; x |= x >> 16; return x - (x >> 1); } public static long HighestOneBit(long x) { x |= x >> 01; x |= x >> 02; x |= x >> 04; x |= x >> 08; x |= x >> 16; x |= x >> 32; return x - (x >> 1); } public static int Lcm(int left, int right) => left / Gcd(left, right) * right; public static long Lcm(long left, long right) => left / Gcd(left, right) * right; public static BigInteger Lcm(BigInteger left, BigInteger right) => left / Gcd(left, right) * right; public static int Pow(int value, int exponent) { var r = 1; while (exponent > 0) { if ((exponent & 1) == 1) r *= value; value *= value; exponent >>= 1; } return r; } public static long Pow(long value, int exponent) { var r = 1L; while (exponent > 0) { if ((exponent & 1) == 1) r *= value; value *= value; exponent >>= 1; } return r; } public static long Fact(int value) { var r = 1L; for (var i = 2; i <= value; i++) r *= i; return r; } }