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", count, max)
}

C++: #include <iostream>
#include <cstdio>
#define MAX_N 10
#define MAX_M 10
using namespace std;

int field[MAX_N][MAX_M] = {0};
int x, y, size, nx, ny;

void Big()
{
	int mx[13] = {-1, -1, -1, 0, 0, 0, 1, 1, 1, -2, 0, 0, 2}, my[13] = {-1, 0, 1, -1, 0, 1, -1, 0, 1, 0, -2, 2, 0};
	for (int i = 0; i < 13; i++) {
		nx = x + mx[i]; ny = y + my[i];
		if (0 <= nx && nx < MAX_N && 0 <= ny && ny < MAX_M) field[nx][ny]++; 
	}
}

void Midole()
{
	int mx[9] = {-1, -1, -1, 0, 0, 0, 1, 1, 1}, my[9] = {-1, 0, 1, -1, 0, 1, -1, 0, 1};
	for (int i = 0; i < 9; i++) {
		nx = x + mx[i]; ny = y + my[i];
		if (0 <= nx && nx < MAX_N && 0 <= ny && ny < MAX_M) field[nx][ny]++; 
	}
}

void Mini()
{
	int mx[5] = {-1, 0, 0, 0, 1}, my[5] = {0, -1, 0, 1, 0};
	for (int i = 0; i < 5; i++) {
		nx = x + mx[i]; ny = y + my[i];
		if (0 <= nx && nx < MAX_N && 0 <= ny && ny < MAX_M) field[nx][ny]++; 
	}
}

int main(void)
{
	int ans = 0, color = 0;
	while (scanf("%d,%d,%d", &x, &y, &size) != EOF) {
		if (x == 0 && y == 0 && size == 0) break;
		switch (size) {
			case 1: Mini(); break;
			case 2: Midole(); break;
			case 3: Big(); break;
		}
	}
	for (int i = 0; i < 10; i++) {
		for (int j = 0; j < 10; j++) {
			if (field[i][j] == 0) ans++;
			else if (color < field[i][j]) color = field[i][j];
		}
	}
	cout << ans << endl << color << endl;

	return 0;
}

C++: #include <iostream>
using namespace std;
int main()
{
	int cell[10][10] = {{0}}, x, y, size, i, j, max = 0, num = 0;
	char c;
	while (1)
	{
		cin >> x;
		if (cin.eof() || x == -1) break;
		cin >> c >> y >> c >> size;
		switch (size)
		{
			case 1:
				for (i = y-1; i <= y+1; i++)
				{
					for (j = ((i == y-1 || i == y+1) ? x : x-1); j <= ((i == y-1 || i == y+1) ? x : x+1); j++)
					{
						if ((0 <= i && i < 10) && (0 <= j && j < 10))
							cell[j][i]++;
					}
				}
				break;
			case 2:
				for (i = y-1; i <= y+1; i++)
				{
					for (j = x-1; j <= x+1; j++)
					{
						if ((0 <= i && i < 10) && (0 <= j && j < 10))
							cell[j][i]++;
					}
				}
				break;
			case 3:
				for (i = y-2; i <= y+2; i++)
				{
					for (j = ((i == y-2 || i == y+2) ? x : ((i == y-1 || i == y+1) ? x-1 : x-2)); j <= ((i == y-2 || i == y+2) ? x : ((i == y-1 || i == y+1) ? x+1 : x+2)); j++)
					{
						if ((0 <= i && i < 10) && (0 <= j && j < 10))
							cell[j][i]++;
					}
				}
				break;
		}
		for (i = 0; i < 10; i++)
		{
			for (j = 0; j < 10; j++)
			{
				cout << cell[j][i] << " ";
			}
			cout << endl;
		}
	}
	for (i = 0; i < 10; i++)
	{
		for (j = 0; j < 10; j++)
		{
			if (cell[j][i] >= max)
				max = cell[j][i];
			if (cell[j][i] == 0)
				num++;
		}
	}
	cout << num << endl << max << endl;
	return 0;
}

C++: #include <cstdio>
#include <cstdlib>
#include <iostream>
#include <string>
#include <cmath>
#include <algorithm>
#include <vector>
#include <queue>
#include <stack>

using namespace std;
typedef long long ll;

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

void drop(int x,int y){
    
    if(0<=x && x<10 && 0<=y && y<10){
        paper[x][y]++;
    }
    
}

int main(){
    int x,y,s,ans_zero=0,ans_max=0;
    
    while(EOF!=scanf("%d,%d,%d",&x,&y,&s)){
        
        switch (s) {
            case 1: //small
                drop(x-1,y);
                drop(x,y-1);
                drop(x+1,y);
                drop(x,y+1);
                drop(x,y);
                break;
                
            case 3:
                drop(x+2,y);
                drop(x,y+2);
                drop(x-2,y);
                drop(x,y-2);
                
            case 2: //medium
                for(int i=x-1;i<=x+1;i++){
                    for(int j=y-1;j<=y+1;j++){
                        drop(i,j);
                    }
                }
                break;
        }
    }
    
    
    
    for(int i=0;i<10;i++){
        for(int j=0;j<10;j++){
            if(paper[i][j]==0)
                ans_zero++;
            ans_max=max(ans_max,paper[i][j]);
        }
    }
    
    printf("%d\n%d\n",ans_zero,ans_max);
    
    return 0;
}

C++: #include <cstdio>
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
typedef vector<int> vi;
typedef vector<vi> vvi;

const int margin = 3;
const int paper_size = 10;
int cordx[] = {0,  0, -1, 0, 1, -1, -1, 1,  1,  0, -2, 0, 2};
int cordy[] = {0, -1,  0, 1, 0, -1,  1, 1, -1, -2,  0, 2, 0};

int main(int argc, char **argv)
{
  vvi paper(paper_size+margin*2, vi(paper_size+margin*2, 0));
  int x, y, size;
  char com;
  for (;;) {
    cin >> x >> com >> y >> com >> size;
    if (cin.eof())
      break;

    for (int i = 0; i < 1+4*size; i++) {
      paper[margin+x+cordx[i]][margin+y+cordy[i]]++;
    }
  }

  int empty_nr = 0;
  int max_score = 0;
  for (int i = margin; i < margin+paper_size; i++) {
    for (int j = margin; j < margin+paper_size; j++) {
      if (paper[i][j]) {
        max_score = max(max_score, paper[i][j]);
      } else {
        empty_nr++;
      }
    }
  }
  cout << empty_nr << endl;
  cout << max_score << endl;

  return 0;
}