Go: package main

import (
	"bufio"
	"os"
	"strings"
	"strconv"
	"fmt"
)

func rangeCheck(x, y int) bool {
	if x >= 0 && x <= 9 && y >= 0 && y <= 9 {
		return true
	} else {
		return false
	}
}

func main() {
	scanner := bufio.NewScanner(os.Stdin)
	paper := make([][]int, 10)
	for i := range paper {
		paper[i] = make([]int, 10)
		for j := range paper[i] {
			paper[i][j] = 0
		}
	}
	// fmt.Println(paper)
	for scanner.Scan() {
		infos := strings.Split(scanner.Text(), ",")
		x, _ := strconv.Atoi(infos[0])
		y, _ := strconv.Atoi(infos[1])
		s, _ := strconv.Atoi(infos[2])
		// fmt.Println(x, y, s)
		switch s {
		case 1:
			paper[x][y]++
			if rangeCheck(x, y-1) {
				paper[x][y-1]++
			}
			if rangeCheck(x, y+1) {
				paper[x][y+1]++
			}
			if rangeCheck(x-1, y) {
				paper[x-1][y]++
			}
			if rangeCheck(x+1, y) {
				paper[x+1][y]++
			}
			continue
		case 2:
			paper[x][y]++
			if rangeCheck(x-1, y-1) {
				paper[x-1][y-1]++
			}
			if rangeCheck(x, y-1) {
				paper[x][y-1]++
			}
			if rangeCheck(x+1, y-1) {
				paper[x+1][y-1]++
			}
			if rangeCheck(x-1, y) {
				paper[x-1][y]++
			}
			if rangeCheck(x+1, y) {
				paper[x+1][y]++
			}
			if rangeCheck(x-1, y+1) {
				paper[x-1][y+1]++
			}
			if rangeCheck(x, y+1) {
				paper[x][y+1]++
			}
			if rangeCheck(x+1, y+1) {
				paper[x+1][y+1]++
			}
			continue
		case 3:
			paper[x][y]++
			if rangeCheck(x-1,y-1) {
				paper[x-1][y-1]++
			}
			if rangeCheck(x,y-1) {
				paper[x][y-1]++
			}
			if rangeCheck(x+1,y-1) {
				paper[x+1][y-1]++
			}
			if rangeCheck(x-1,y) {
				paper[x-1][y]++
			}
			if rangeCheck(x+1,y) {
				paper[x+1][y]++
			}
			if rangeCheck(x-1,y+1) {
				paper[x-1][y+1]++
			}
			if rangeCheck(x,y+1) {
				paper[x][y+1]++
			}
			if rangeCheck(x+1,y+1) {
				paper[x+1][y+1]++
			}
			if rangeCheck(x,y-2) {
				paper[x][y-2]++
			}
			if rangeCheck(x-2,y) {
				paper[x-2][y]++
			}
			if rangeCheck(x+2,y) {
				paper[x+2][y]++
			}
			if rangeCheck(x,y+2) {
				paper[x][y+2]++
			}
			continue
		}
	}
	count := 0
	max := -1
	for i := range paper {
		for j := range paper[i] {
			if paper[i][j] == 0 {
				count++
			}
			if max >= paper[i][j] {
				max = max
			} else {
				max = paper[i][j]
			}
		}
	}
	fmt.Printf("%d\n%d\n", count, max)
}

C++: #include <stdio.h>
  int xy[15][15]={};
  int main(){
	  int x,y,s,i,j,num=0;
	  while(scanf("%d,%d,%d",&x,&y,&s) != EOF){
		  if(s==1){
			  xy[x][y]++;
			  xy[x-1][y]++;
			  xy[x+1][y]++;
			  xy[x][y-1]++;
			  xy[x][y+1]++;
		  }else if(s==2){
			  xy[x-1][y-1]++;
			  xy[x-1][y]++;
			  xy[x-1][y+1]++;
			  xy[x][y-1]++;
			  xy[x][y]++;
			  xy[x][y+1]++;
			  xy[x+1][y-1]++;
			  xy[x+1][y]++;
			  xy[x+1][y+1]++;
		  }else if(s==3){
			  xy[x-2][y]++;
			  xy[x-1][y-1]++;
			  xy[x-1][y]++;
			  xy[x-1][y+1]++;
			  xy[x][y-2]++;
			  xy[x][y-1]++;
			  xy[x][y]++;
			  xy[x][y+1]++;
			  xy[x][y+2]++;
			  xy[x+1][y-1]++;
			  xy[x+1][y]++;
			  xy[x+1][y+1]++;
			  xy[x+2][y]++;
		  }
	  }
	  int max=xy[0][0];
	  for(i=0;i<10;i++){
		  for(j=0;j<10;j++){
			  if(xy[i][j]==0) num++;
			  if(xy[i][j]>max) max=xy[i][j];
		  }
	  }
	  printf("%d\n%d\n",num,max);
	  return 0;
  }

C++: #include <iostream>
#include <algorithm>
using namespace std;

int table[12][12]={0};

void dropink(int x,int y, int s){
	switch (s){
		case 3:
			if(x-2>=0)
				table[x-2][y]++;
			if(y-2>=0)
				table[x][y-2]++;
			if(x+2<=11)
				table[x+2][y]++;
			if(y+2<=11)
				table[x][y+2]++;
		case 2:
			table[x+1][y+1]++;
			table[x-1][y+1]++;
			table[x+1][y-1]++;
			table[x-1][y-1]++;
		case 1:
			table[x][y]++;
			table[x+1][y]++;
			table[x][y+1]++;
			table[x-1][y]++;
			table[x][y-1]++;
	}
	return ;
}

int main(){
	int x,y,s;
	char tem;
	while( cin >> x >> tem >> y >> tem >> s ,!cin.eof())
		dropink(x+1,y+1,s);
	int NUM=0,MAX=0;
	for(int y=1;y<=10;y++){
		for(int x=1;x<=10;x++){
			cout << table[x][y] << ' ';
			if(table[x][y])
				MAX=max(MAX,table[x][y]);
			else
				NUM++;
		}
		cout << endl;
	}
	cout << NUM << endl << MAX << endl;
	return 0;
}

C++: #include<iostream>
#include<vector>
#include<string>

enum InkSize
{
	small=0,
	middle,
	large
};

InkSize Next(int x)
{
	if(x<0 || 2<x)
	{
		std::cout << "Input Error.\n";

		return small;
	}

	const InkSize ink[3]=
	{
	small,
	middle,
	large
	};

	return ink[x];
}

struct Board
{
	Board(int a)
	{
		for(size_t i=0; i<m_element; ++i)
		{
			for(size_t j=0; j<m_element; ++j)
			{
				m_map[j][i] = a;
			}
		}
	}
	
	void DropInk(int x, int y, InkSize ink)
	{
		const int inkSet[3][5][5]=
		{
			{//small
				{0,0,0,0,0},
				{0,0,1,0,0},
				{0,1,1,1,0},
				{0,0,1,0,0},
				{0,0,0,0,0},
			},
			{//middle
				{0,0,0,0,0},
				{0,1,1,1,0},
				{0,1,1,1,0},
				{0,1,1,1,0},
				{0,0,0,0,0},
			},
			{//large
				{0,0,1,0,0},
				{0,1,1,1,0},
				{1,1,1,1,1},
				{0,1,1,1,0},
				{0,0,1,0,0},
			}
		};

		for(size_t i=0; i<5; ++i)
		{
			for(size_t j=0; j<5; ++j)
			{
				if( y-2+i<0 || x-2+j<0 || y-2+i>9 || x-2+j>9 )
				{
					continue;
				}

				m_map[y-2+i][x-2+j] += inkSet[ink][i][j];
			}
		}
	}

	int CountNonInkedCell()
	{
		int count=0;

		for(size_t i=0; i<m_element; ++i)
		{
			for(size_t j=0; j<m_element; ++j)
			{
				if(m_map[i][j]==0)
				{
					++count;
				}
			}
		}

		return count;
	}

	int MostInkedCell()
	{
		int max=0;

		for(size_t i=0; i<m_element; ++i)
		{
			for(size_t j=0; j<m_element; ++j)
			{
				if(m_map[i][j]>max)
				{
					max=m_map[i][j];
				}
			}
		}

		return max;
	}

	enum { m_element = 10 };

	int m_map[m_element][m_element];
};

int main()
{
	Board boad1(0);

	int x=0, y=0, inkSize=0;

	char c;

	while(std::cin >> x >> c >> y >> c >> inkSize)
	{
		boad1.DropInk(x,y,Next(inkSize-1));
	}

	std::cout << boad1.CountNonInkedCell() << ' ' << boad1.MostInkedCell() << '\n';

}

C++: #include<iostream>
#include<cctype>
#include<cstdlib>
using namespace std;

int paper[10][10] = { 0 };

void drop_ink(int x,int y,int size) {
	if (size == 1) {
		for (int i = 0; i < 3; i++) {
			if (x + i - 1 >= 0 && y >= 0) { paper[x + i - 1][y] += 1; }
		}
		for (int i = 0; i < 3; i++) {
			if (x >= 0 && y + i - 1 >= 0) {
				if (y + i - 1 != y) { paper[x][y + i - 1] += 1; }
			}
		}
	}
	else if (size == 2) {
		for (int i = 0; i < 3; i++) {
			if (x + 1 >= 0 && y - 1 + i >= 0) {
				paper[x + 1][y - 1 + i] += 1;
				}
			}
		for (int i = 0; i < 3; i++) {
			if (x >= 0 && y - 1 + i >= 0) {
				paper[x][y - 1 + i] += 1;
				}
			}
		for (int i = 0; i < 3; i++) {
			if (x - 1 >= 0 && y - 1 + i >= 0) {
				paper[x - 1][y - 1 + i] += 1;
				}
			}
	}
	else if (size == 3) {
		for (int i = 0; i < 3; i++) {
			if (x + 1 >= 0 && y - 1 + i >= 0) {
				paper[x + 1][y - 1 + i] += 1;
			}
		}
		for (int i = 0; i < 5; i++) {
			if (x >= 0 && y - 2 + i >= 0) {
				paper[x][y - 2 + i] += 1;
			}
		}
		for (int i = 0; i < 3; i++) {
			if (x - 1 >= 0 && y - 1 + i >= 0) {
				paper[x - 1][y - 1 + i] += 1;
			}
		}
		if (x + 2 >= 0 && y >= 0){paper[x + 2][y] += 1;}
		if (x - 2 >= 0 && y >= 0) { paper[x - 2][y] += 1; }
	}
}
int main() {
	char x[1], y[1], size[1]; char tem[100];
	int white = 0; int most_intense=0;
	for (int i = 0; i < 3;i++) {
		cin >> tem;
		x[0] = tem[0]; y[0] = tem[2]; size[0] = tem[4];
		drop_ink(atoi(x),atoi(y),atoi(size));
	}
	for (int i = 0; i < 10; i++) {
		for (int j = 0; j < 10; j++) {
			if (paper[j][i] == 0) { white += 1; }
			if (most_intense < paper[j][i]) { most_intense = paper[j][i]; }
		}
	}
	cout << white << endl << most_intense ;
}