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 <cstdio>
using namespace std;

int main()
{
	int xy[10][10] = {'0'};
	int x,y,size;
	xy[0][0] = 0;
	
	while(scanf("%d,%d,%d", &x,&y,&size), x != EOF){
		
		xy[y-1][x]++;
		xy[y][x-1]++;
		xy[y][x]++;
		xy[y][x+1]++;
		xy[y+1][x]++;
		
		if(size >= 2){
			xy[y-1][x-1]++;
			xy[y-1][x+1]++;
			xy[y+1][x-1]++;
			xy[y+1][x+1]++;
		}
		if(size == 3){
			xy[y-2][x]++;
			xy[y][x-2]++;
			xy[y][x+2]++;
			xy[y+2][x]++;
		}
	}
	
	int w=0,con = 0;
	
	for(int i=0; i < 10; i++){
		for(int j=0; j < 10; j++){
			if(xy[i][j] == 0)w++;
			if(con < xy[i][j])con = xy[i][j];
		}
	}
	
	printf("%d\n%d\n", w, con);
	
	return (0);
}

C++: #include<functional>
#include<algorithm>
#include<iostream>
#include<utility>
#include<string>
#include<vector>
#include<cmath>
#include<stack>
#include<queue>
#include<deque>
#include<map>
#define rep(i,n) for(int i=0;i<n;i++)
#define loop(i,x,n) for(int i=x;i<n;i++)
#define pf push_front
#define pb push_back
#define int long long
using namespace std;
const int INF=1000000007;
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};
int ex[4]={1,-1,1,-1};
int ey[4]={1,1,-1,-1};
int fx[4]={2,0,-2,0};
int fy[4]={0,2,0,-2};

int mp[20][20]={};

signed main(){
  int x,y,s;
  char z;
  while(cin>>x>>z>>y>>z>>s){
    if(s==1){
      mp[y][x]+=1;
      rep(i,4){
        if(y+dy[i]>=0&&x+dx[i]>=0){
          mp[y+dy[i]][x+dx[i]]+=1;
        }
      }
    }
    else if(s==2){
      mp[y][x]+=1;
      rep(i,4){
        if(y+dy[i]>=0&&x+dx[i]>=0){
          mp[y+dy[i]][x+dx[i]]+=1;
        }
        if(y+ey[i]>=0&&x+ex[i]>=0){
          mp[y+ey[i]][x+ex[i]]+=1;
        }
      }
    }
    else if(s==3){
      mp[y][x]+=1;
      rep(i,4){
        if(y+dy[i]>=0&&x+dx[i]>=0){
          mp[y+dy[i]][x+dx[i]]+=1;
        }
        if(y+ey[i]>=0&&x+ex[i]>=0){
          mp[y+ey[i]][x+ex[i]]+=1;
        }
        if(y+fy[i]>=0&&x+fx[i]>=0){
          mp[y+fy[i]][x+fx[i]]+=1;
        }
      }
    }
  }
  int ans1=0,ans2=0;
  rep(i,10){
    rep(j,10){
      if(mp[i][j]==0)ans1++;
      if(ans2<mp[i][j])ans2=mp[i][j];
    }
  }
  cout<<ans1<<endl;
  cout<<ans2<<endl;
  return 0;
}

C++: #include <iostream>
using namespace std;
int depth[11][11];
int dx[] = {0,  0,  0,  1, -1,  1,  1, -1, -1,  0,  0,  2, -2};
int dy[] = {0,  1, -1,  0,  0, -1,  1,  1, -1,  2, -2,  0,  0};
int ans;
int total;
void draw(int x, int y, int size){
	for(int i = 0; i < size*4+1; i++){
		int nx = x + dx[i];
		int ny = y + dy[i];
		if( nx < 0 || nx >= 10 || ny < 0 || ny >= 10) continue;
		depth[ny][nx]++;
		ans = max(ans, depth[ny][nx]);
		if(depth[ny][nx] == 1)total--;
	}
}
int main(){
	int x, y , size;
	char c;
	total = 10*10;
	while(cin >> x >> c >> y >> c >> size){
		draw(x,y,size);
	}
	cout << total << endl;
	cout << ans << endl;
	return 0;
}

C++: #include <iostream>
#include <string>
#include <algorithm>
#include <math.h>
#include <vector>
#include <set>

using namespace std;
typedef long long LL;
static const double EPS = 1e-9;

#define FOR(i,k,n) for (int i=(k); i<(int)(n); ++i)
#define REP(i,n) FOR(i,0,n) 

const static int dx[12] = {1,0,-1,0,1,-1,-1,1,2,0,-2,0};
const static int dy[12] = {0,1,0,-1,1,1,-1,-1,0,2,0,-2};
int main(void){  
  int date[14][14]={0};
  int x,y,s,c=0,m=0;
  
  while(scanf("%d,%d,%d",&x,&y,&s) != EOF)
    REP(i,4*s) date[x+2+dx[i]][y+2+dy[i]] += 1;

  FOR(i,2,13)
    FOR(j,2,13){
      if(date[i][j]>0) c++;
      m = max(date[i][j], m);
    }
  cout << 100-c << endl;
  cout << m << endl;
}

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

int board[10][10];

void small(int x, int y){
	board[x][y]++;
	if(x>=1) board[x-1][y]++;
	if(x<=8) board[x+1][y]++;
	if(y>=1) board[x][y-1]++;
	if(y<=8) board[x][y+1]++;
}

void middle(int x, int y){
	small(x, y);
	if(x>=1 && y>=1) board[x-1][y-1]++;
	if(x>=1 && y<=8) board[x-1][y+1]++;
	if(x<=8 && y>=1) board[x+1][y-1]++;
	if(x<=8 && y<=8) board[x+1][y+1]++;
}

void large(int x, int y){
	middle(x, y);
	if(x>=2) board[x-2][y]++;
	if(x<=7) board[x+2][y]++;
	if(y>=2) board[x][y-2]++;
	if(y<=7) board[x][y+2]++;
}

int main(void){
	
	for(int i=0; i<10; i++)
		for(int j=0; j<10; j++)
			board[i][j] = 0;

	int x, y, size;
	char c1, c2;

	while(cin >> x >> c1 >> y >> c2 >> size){
		switch(size){
		case 1:
			small(x, y);
			break;
		case 2:
			middle(x, y);
			break;
		case 3:
			large(x, y);
			break;
		}
	}

	int max = 0;
	int count = 0;

	for(int i=0; i<10; i++){
		for(int j=0; j<10; j++){
			if(board[i][j] > max) max = board[i][j];
			if(board[i][j] == 0) count++;
		}
	}

	cout << count << endl << max << endl;

	return 0;
}