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++: //インクを落とす
#include<cstdio>

using namespace std;

int main(void){
	int pa[14][14];
	int i,j;	//ループカウンタ
	int x,y,size,da=0,not=0;
	
	//二次元配列の初期化
	for(i=2;i<12;i++){
		for(j=2;j<12;j++)
			pa[i][j]=0;
	}

	while(scanf("%d,%d,%d",&x,&y,&size)!=EOF){
		x=x+2;
		y=y+2;
		switch(size){
			case 1:	//小
				pa[x][y]++;
				pa[x-1][y]++;
				pa[x+1][y]++;
				pa[x][y-1]++;
				pa[x][y+1]++;
				break;
			case 2:	//中
				for(i=-1;i<=1;i++){
					for(j=-1;j<=1;j++)
						pa[x+i][y+j]++;
				}
				break;
			case 3:	//大
				for(i=-1;i<=1;i++){
					for(j=-1;j<=1;j++)
						pa[x+i][y+j]++;
				}
				pa[x-2][y]++;
				pa[x+2][y]++;
				pa[x][y-2]++;
				pa[x][y+2]++;
				break;
		}
	}
	for(i=2;i<12;i++){
		for(j=2;j<12;j++){
			if(pa[i][j]==0)
				not++;
		}
	}
	for(i=2;i<12;i++){
		for(j=2;j<12;j++){
			if(pa[i][j]>da)
				da=pa[i][j];
		}
	}
	printf("%d\n%d\n",not,da);

	return 0;
}

C++: #include<iostream>
#include<cstdio>
using namespace std;
int main(){
  int x,y,t;
  int field[30][30] = {0};
  for(;;){
    if(scanf("%d,%d,%d",&x,&y,&t) == EOF){break;}
    field[x+10][y+10]++;
    field[x+9][y+10]++;
    field[x+11][y+10]++;
    field[x+10][y+9]++;
    field[x+10][y+11]++;
    if(t>1){
      field[x+9][y+11]++;
      field[x+9][y+9]++;
      field[x+11][y+11]++;
      field[x+11][y+9]++;
    }
    if(t>2){
      field[x+10][y+12]++;
      field[x+10][y+8]++;
      field[x+12][y+10]++;
      field[x+8][y+10]++;
    }
  }
  int ans[2] = {0};
  for(int i=0; i<10; i++){
    for(int j=0; j<10; j++){
      if(!field[i+10][j+10]){ans[0]++;}
      if(field[i+10][j+10] > ans[1]){ans[1] = field[i+10][j+10];}
    }
  }
  cout <<ans[0]<<endl<<ans[1]<<endl;
  return 0;
}

C++: #include<iostream>

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

void drop(int x,int y){
  if(x>=0&&y>=0&&x<=9&&y<=9){
    ++paper[x][y];
  }
}

void ink(int x,int y, int s){
  switch(s){
    case 3: drop(x+2,y);
            drop(x-2,y);
            drop(x,y+2);
            drop(x,y-2);
    case 2: drop(x+1,y+1);
            drop(x-1,y+1);
            drop(x-1,y-1);
            drop(x+1,y-1);
    case 1: drop(x,y);
            drop(x+1,y);
            drop(x-1,y);
            drop(x,y+1);
            drop(x,y-1);
  }

}

int main(){
  int x,y,s;

  //drop(9,9);

  /*for(int i=0;i<10;i++){
    for(int j=0;j<10;j++){
      std::cout << paper[i][j] << std::endl;
    }
  }*/

  while(scanf(" %d,%d,%d",&x,&y,&s)){
    //std::cout << x << y << s;
    ink(x,y,s);
  }

  int spase=0,max=0;

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

  std::cout << spase << std::endl;
  std::cout << max << std::endl;


}

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

#define rep(i,a,n) for(int i=a; i<n; i++)
#define repr(i,a,n) for(int i=a; i>=n; i--)
#define pb(a) push_back(a)
#define fr first
#define sc second
#define INF 999999999

#define X real()
#define Y imag()
#define EPS (1e-10)
#define EQ(a,b) (abs((a) - (b)) < EPS)
#define EQV(a,b) ( EQ((a).X, (b).X) && EQ((a).Y, (b).Y) )
#define LE(n, m) ((n) < (m) + EPS)
#define GE(n, m) ((n) + EPS > (m))

typedef vector<int> VI;
typedef vector<VI> MAT;
typedef pair<int, int> pii;
typedef long long int ll;

typedef complex<double> P;
typedef pair<P, P> L;
typedef pair<P, double> C;

int const MOD = 1000000007;
int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
int dx[8] = {1, 0, -1, 0, 1, -1, 1, -1};

int main() {
    int a[10][10];
    memset(a, 0, sizeof(a));
    int x,y,s;
    while(scanf("%d,%d,%d", &x, &y, &s) != EOF) {
        a[x][y]++;
        // if(x == 0 && y == 0 && s == 0) break;
        if(s == 1) {
            if(x + 1 <= 9) a[x + 1][y]++;
            if(x - 1 >= 0) a[x - 1][y]++;
            if(y + 1 <= 9) a[x][y + 1]++;
            if(y - 1 >= 0) a[x][y - 1]++;
        }
        else if(s == 2) {
            rep(i,0,8) {
                if(x + dx[i] < 0) continue;
                else if(x + dx[i] > 9) continue;
                else if(y + dy[i] < 0) continue;
                else if(y + dy[i] > 9) continue;
                else a[x + dx[i]][y + dy[i]]++;
            }
        }
        else {
            rep(i,0,8) {
                if(x + dx[i] < 0) continue;
                else if(x + dx[i] > 9) continue;
                else if(y + dy[i] < 0) continue;
                else if(y + dy[i] > 9) continue;
                else a[x + dx[i]][y + dy[i]]++;
            }
            if(x + 2 <= 9) a[x + 2][y]++;
            if(x - 2 >= 0) a[x - 2][y]++;
            if(y + 2 <= 9) a[x][y + 2]++;
            if(y - 2 >= 0) a[x][y - 2]++;
        }
    }

    int m_point = 0;
    int max_num = 0;
    rep(i,0,10) rep(j,0,10) {
        if(a[i][j] == 0) m_point++;
        max_num = max(max_num, a[i][j]);
    }
    cout << m_point << endl;
    cout << max_num << endl;

    return 0;
}