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>
using namespace std;

int main(){
    int grid[14][14];
    int s[4][2]={{0,-1},{0,1},{-1,0},{1,0}};
    int m[4][2]={{-1,-1},{-1,1},{1,-1},{1,1}};
    int l[4][2]={{0,-2},{0,2},{-2,0},{2,0}};
    int x, y, size;
    int i, j;
    int max=0;
    int blank=0;
    char comma;
    for(i=0;i<14;i++){
        for(j=0;j<14;j++){
            grid[i][j] = 0;
        }
    }
    while(cin >> x >> comma >> y >> comma >> size){
        x += 2;
        y += 2;
        grid[x][y] += 1;
        for(i=0;i<4;i++){
            grid[x+s[i][0]][y+s[i][1]] += 1;
        }
        if(size > 1){
            for(i=0;i<4;i++){
                grid[x+m[i][0]][y+m[i][1]] += 1;
            }
            if(size > 2){
                for(i=0;i<4;i++){
                    grid[x+l[i][0]][y+l[i][1]] += 1;
                }
            }
        }
        for(i=2;i<12;i++){
            for(j=2;j<12;j++){
                if(grid[i][j] > max){
                    max = grid[i][j];
                }else if(grid[i][j] == 0){
                    blank += 1;
                }
            }
        }
        cout << blank << endl;
        blank = 0;
        cout << max << endl;
    }
    return 0;
}

C++: #include <cstdio>
#include <vector>
#include <algorithm>
#include <cstring>
#include <string>
#include <cctype>
#include <sstream>
#include <cmath>
#include <climits>

using namespace std;

#define reep(i,f,n) for(int i=f; i<int(n); ++i)
#define rep(i,n) reep(i,0,n)

typedef vector<int> vi;

int main()
{
	int field[10][10];
	rep(i, 10)
		fill(field[i], field[i]+10, 0);

	int deepest = 0;
	int ans = 100;
	int x, y, s;
	while(scanf("%d,%d,%d", &x, &y, &s) != EOF){
		reep(i, -2, 3) reep(j, -2, 3){
			int py = i+y, px = j+x;
			if(py<0 || px<0 || 10<=py || 10<=px)
				continue;
			if(abs(i)+abs(j) >= 3)
				continue;
			if(s!=3 && (abs(i)==2 || abs(j)==2))
				continue;
			if(s==1 && abs(i)+abs(j)>=2)
				continue;

			ans -= !field[py][px];
			deepest = max(deepest, ++field[py][px]);
		}
	}
	printf("%d\n%d\n", ans, deepest);

	return 0;
}

C++: #include <iostream>
#include <iomanip>
#include <list>
#include <map>
#include <algorithm>
#include <stack>
#include <string>
#include <vector>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>

#define DEBUG 0

using namespace std;

struct INKI{
	int x;
	int y;
	int size;
};

int main(){
	int map[10][10];

	for(int i = 0; i < 10; i++){
		for(int j = 0; j < 10; j++){
			map[i][j] = 0;
		}
	}

	INKI tmp;
	while( scanf("%d,%d,%d", &tmp.x, &tmp.y, &tmp.size) ){
		if(tmp.size == 3){
			for(int i = -2; i <= 2; i++){
				if(tmp.y + i >= 0 && tmp.y + i < 10){
					map[tmp.y + i][tmp.x]++;
				}
				if(tmp.x + i >= 0 && tmp.x + i < 10){
					map[tmp.y][tmp.x + i]++;
				}
			}
			map[tmp.y][tmp.x]--;
			for(int i = -1; i <= 1; i += 2){
				if(tmp.y + i >= 0 && tmp.y + i < 10){
					for(int j = -1; j <= 1; j += 2){
						if(tmp.x + j >= 0 && tmp.x + j < 10){
							map[tmp.y + i][tmp.x + j]++;
						}
					}
				}
			}
		}
		else if(tmp.size == 2){
			for(int i = tmp.y - 1; i <= tmp.y + 1; i++){
				if(i >= 0 && i < 10){
					for(int j = tmp.x - 1; j <= tmp.x + 1; j++){
						if(j >= 0 && j < 10){
							map[i][j]++;
						}
					}
				}
			}
		}
		else if(tmp.size == 1){
			for(int i = -1; i <= 1; i++){
				if(tmp.y + i >= 0 && tmp.y + i < 10){
					map[tmp.y + i][tmp.x]++;
				}
				if(tmp.x + i >= 0 && tmp.x + i < 10){
					map[tmp.y][tmp.x + i]++;
				}
			}
			map[tmp.y][tmp.x]--;
		}
	}

	int noColor = 0;
	int koi = 0;

	for(int i = 0; i < 10; i++){
		for(int j = 0; j < 10; j++){
			if(map[i][j] == 0){
				noColor++;
			}
			if(koi < map[i][j]){
				koi = map[i][j];
			}
		}
	}

	cout << noColor << endl;
	cout << koi << endl;

	return 0;
}

C++: #include<iostream>
#include<algorithm>
using namespace std;
int main()
{
	int bigx[4] = { 0, 2, 0, -2 };
	int bigy[4] = { 2, 0, -2, 0 };
	int smx[4] = {0,1,0,-1};
	int smy[4] = {1,0,-1,0};
	int midx[9] = { -1, -1, 0, 1, 1,  1,  0, -1 };
	int midy[9] = {  0,  1, 1, 1, 0, -1, -1, -1 };
	int map[10][10] = { 0 };
	bool flag[10][10] = { false };
	int cnt = 100;
	int x, y, size;
	char s, d;
	int ma = 0;
	while (cin >> x >> s >> y >> d >> size){
		
		if (size == 1){
			for (int i = 0; i < 4; i++){
				int xx = smx[i] + x;
				int yy = smy[i] + y;
				if (xx >= 0 && xx < 10 && y >= 0 && y < 10){
					map[xx][yy]++;
					if (!flag[xx][yy]){
						flag[xx][yy] = true;
						cnt--;
					}
					ma = max(ma, map[xx][yy]);
				}
			}
		}
		else if (size == 2){
			for (int i = 0; i < 8; i++){
				int xx = midx[i] + x;
				int yy = midy[i] + y;
				if (xx >= 0 && xx < 10 && y >= 0 && y < 10){
					map[xx][yy]++;
					if (!flag[xx][yy]){
						flag[xx][yy] = true;
						cnt--;
					}
					ma = max(ma, map[xx][yy]);
				}
			}
		}
		else {
			for (int i = 0; i < 4; i++){
				int xx = bigx[i] + x;
				int yy = bigy[i] + y;
				if (xx >= 0 && xx < 10 && y >= 0 && y < 10){
					map[xx][yy]++;
					if (!flag[xx][yy]){
						flag[xx][yy] = true;
						cnt--;
					}
					ma = max(ma, map[xx][yy]);
				}
			}
			for (int i = 0; i < 8; i++){
				int xx = midx[i] + x;
				int yy = midy[i] + y;
				if (xx >= 0 && xx < 10 && y >= 0 && y < 10){
					map[xx][yy]++;
					if (!flag[xx][yy]){
						flag[xx][yy] = true;
						cnt--;
					}
					ma = max(ma, map[xx][yy]);
				}
			}
		}
	}
	cout << cnt << endl;
	cout << ma << endl;
}