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;
    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[0]][y+s[1]] += 1;
        }
        if(size > 1){
            for(i=0;i<4;i++){
                grid[x+m[0]][y+m[1]] += 1;
            }
            if(size > 2){
                for(i=0;i<4;i++){
                    grid[x+l[0]][y+l[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;
    cout << max << endl;
    return 0;
}

C++: #include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
int main(void){
  int a[15][15]={0};
  int x,y,size,c=0,m=0;
  while(scanf("%d,%d,%d",&x,&y,&size) != EOF){
    a[x][y]++;
    a[x-1][y]++;
    a[x+1][y]++;
    a[x][y-1]++;
    a[x][y+1]++;
    if(size==1) continue;
    a[x-1][y-1]++;
    a[x+1][y-1]++;
    a[x-1][y+1]++;
    a[x+1][y+1]++;
    if(size==2) continue;
    a[x-2][y]++;
    a[x+2][y]++;
    a[x][y-2]++;
    a[x][y+2]++;
  }
  for(int i=0;i<10;i++){
    for(int j=0;j<10;j++){
      if(!a[i][j]) c++;
      m=max(m,a[i][j]);
    }
  }
  printf("%d\n%d\n",c,m);
}

C++: #include<iostream>
#include<algorithm>
using namespace std;
int main(){
  string str;
  int paper[10][10];
  for(int i=0;i<10;i++){
    for(int j=0;j<10;j++){
      paper[i][j]=0;
    }
  }
  int I=50;
  while(cin >> str){
      int x,y,s;
      x=str[0]-48;
      y=str[2]-48;
      s=str[4]-48;
      if(s==1){
        paper[x][y]++;
        paper[x+1][y]++;
        paper[x-1][y]++;
        paper[x][y+1]++;
        paper[x][y-1]++;
      }
      else if(s==2){
        paper[x][y]++;
        paper[x][y+1]++;
        paper[x][y-1]++;
        paper[x+1][y]++;
        paper[x+1][y+1]++;
        paper[x+1][y-1]++;
        paper[x-1][y]++;
        paper[x-1][y+1]++;
        paper[x-1][y-1]++;
      }
      else if(s==3){
        paper[x][y-2]++;
        paper[x+1][y-1]++;
        paper[x][y-1]++;
        paper[x-1][y-1]++;
        paper[x-2][y]++;
        paper[x-1][y]++;
        paper[x][y]++;
        paper[x+1][y]++;
        paper[x+2][y]++;
        paper[x-1][y+1]++;
        paper[x][y+1]++;
        paper[x+1][y+1]++;
        paper[x][y+2]++;
      }
    }
  int white=0,koii=0;
  for(int i=0;i<10;i++){
    for(int j=0;j<10;j++){
      if(paper[i][j]==0)white++;
      koii=max(koii,paper[i][j]);
    }
  }
  cout << white << endl << koii << endl;
}

C++: #include <cstdio>
#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

constexpr auto N=10;

int main()
{
  vector<pair<int,int>> const inc[] = {
    { {0,-1}, {-1,0}, {0,0}, {1,0}, {0,1} },
    { {-1,-1}, {0,-1}, {1,-1}, {-1,0}, {0,0}, {1,0}, {-1, 1}, {0,1}, {1,1} },
    { {0,-2}, {-1,-1}, {0,-1}, {1,-1}, {-2,0}, {-1,0}, {0,0}, {1,0}, {2,0}, {-1, 1}, {0,1}, {1,1}, {0,2} }
  };

  unsigned int p[N][N]={};
  int x, y, s;
  while( scanf( "%d,%d,%d", &x, &y, &s ) != EOF ) {
    for( auto const i : inc[s-1] ) {
      auto const px = x + i.first, py = y + i.second;
      if ( px >= 0 && px < N && py >= 0 && py < N )
        ++p[px][py];
    }
  }

  cout
    << count( &p[0][0], &p[0][0]+N*N, 0 ) << endl
    << *max_element( &p[0][0], &p[0][0]+N*N ) << endl;
}

C++: #include "bits/stdc++.h"
using namespace std;

int main(){
	int x,y,s;
	char b;
	int n=10;
	int x1[]={1,0,-1,0};
	int y1[]={0,1,0,-1};
	int x2[]={1,1,-1,-1};
	int y2[]={1,-1,1,-1};
	int x3[]={2,0,-2,0};
	int y3[]={0,2,0,-2};
	
	vector<vector<int> > a(n,vector<int>(n,0));
	while(cin>>x>>b>>y>>b>>s){
		a[x][y]++;
		for(int i=0;i<4;i++){
			if(x+x1[i]>-1&&y+y1[i]>-1&&x+x1[i]<10&&y+y1[i]<10){
				a[x+x1[i]][y+y1[i]]++;
			}
		}
		
		if(s>0){
				for(int i=0;i<4;i++){
				if(x+x2[i]>-1&&y+y2[i]>-1&&x+x2[i]<10&&y+y2[i]<10){
					a[x+x2[i]][y+y2[i]]++;
				}
			}
		}
		
		if(s>1){
				for(int i=0;i<4;i++){
				if(x+x3[i]>-1&&y+y3[i]>-1&&x+x3[i]<10&&y+y3[i]<10){
					a[x+x3[i]][y+y3[i]]++;
				}
			}
		}
	}
	int ans=0;
	int ans2=0;
	for(int i=0;i<10;i++){
		for(int j=0;j<10;j++){
			if(a[i][j]==0)ans++;
			ans2=max(ans2,a[i][j]);
		}
	}
	
	cout<<ans<<" "<<ans2<<endl;
	return 0;
}