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>
#include <algorithm>
#include <functional>
#include <stack>
#include <cmath>
#include <map>
using namespace std;

#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define llong long long

int main() {
  map<int,map<int,int> > cell;
  FOR(i,-2,12) {
    FOR(j,-2,12) {
      cell[i][j] = 0;
    }
  }
  int x,y,s;
  while(scanf("%d,%d,%d", &x, &y, &s) != EOF) {
    if(s == 1) {
      cell[x][y-1]++;
      cell[x-1][y]++;
      cell[x][y]++;
      cell[x+1][y]++;
      cell[x][y+1]++;
    }
    else if(s == 2) {
      FOR(i,-1,2) {
	FOR(j,-1,2) {
	  cell[x+i][y+j]++;
	}
      }
    }
    else if(s == 3) {
      cell[x][y-2]++;
      cell[x-2][y]++;
      cell[x+2][y]++;
      cell[x][y+2]++;
      FOR(i,-1,2) {
	FOR(j,-1,2) {
	  cell[x+i][y+j]++;
	}
      }
    }
  }

  int numzero = 0;
  int maxvalue = 0;
  REP(i,10) {
    REP(j,10) {
      if(cell[i][j] == 0) numzero++;
      if(cell[i][j] > maxvalue) maxvalue = cell[i][j];
    }
  }
  printf("%d\n%d\n",numzero,maxvalue);
  return 0;
}

C++: #include<stdio.h>
#include<iostream>
#include<algorithm>
using namespace std;
void small_size(void);
void middle_size(void);
void big_size(void);
void solve(void);

int x,y,size;
int paper[14][14]={0};

int main(){

  while(scanf("%d,%d,%d",&x,&y,&size)!=EOF){
    switch(size){
    case 1:
      small_size();
      break;
    case 2:
      small_size();
      middle_size();
      break;
    case 3:
      small_size();
      middle_size();
      big_size();
      break;
    }

  }

  solve();

  return 0;
}

void small_size(){

  paper[y+2][x+2]++;
  paper[y+1][x+2]++;
  paper[y+2][x+1]++;
  paper[y+2][x+3]++;
  paper[y+3][x+2]++;

}
void middle_size(){

  paper[y+1][x+1]++;
  paper[y+3][x+1]++;
  paper[y+1][x+3]++;
  paper[y+3][x+3]++;

}

void big_size(){

  paper[y+2][x]++;
  paper[y][x+2]++;
  paper[y+2][x+4]++;
  paper[y+4][x+2]++;

}

void solve(){

  int i,j;
  int zero_cnt=0;
  int max=0;

  for(i=2;i<12;i++){
    for(j=2;j<12;j++){

      if(paper[i][j]==0){
	zero_cnt++;
      }

      if(max<paper[i][j]){
	max=paper[i][j];
      }
    }
  }

  printf("%d\n%d\n",zero_cnt,max);

}

C++: #include<iostream>
#include <fstream>
#include <stdio.h>
#include <stdlib.h>
#define _USE_MATH_DEFINES
#include <math.h>
#include<string>
#include<vector>
#include<cmath>
#include<stack>
#include<queue>
#include<sstream>
#include<algorithm>
#include<map>
#include<complex>
using namespace std;


#define li			long long int
#define rep(i,to)	for(int i=0;i<((int)(to));i++)
#define repp(i,start,to)	for(int i=(int)(start);i<((int)(to));i++)
#define pb			push_back
#define sz(v)		((li)(v).size())
#define bgn(v)		((v).begin())
#define eend(v)		((v).end())
#define allof(v)	(v).begin(), (v).end()
#define dodp(v,n)		memset(v,(li)n,sizeof(v))
#define bit(n)		(1ll<<(li)(n))
#define mp(a,b)		make_pair(a,b)
#define rin	rep(i,n)
#define EPS 1e-10
#define ETOL 1e-8
#define MOD 1000000007
#define F first
#define S second
#define p2(a,b)		cout<<a<<"\t"<<b<<endl
#define p3(a,b,c)		cout<<a<<"\t"<<b<<"\t"<<c<<endl

int main(){
	li dx[13]={ 0, -1,  1,  0,  0,  1,  1, -1, -1,  2, -2,  0,  0};
	li dy[13]={ 0,  0,  0, -1,  1,  1, -1,  1, -1,  0,  0,  2, -2};
	li lim[3]={ 5, 9, 13};
	
	li kami[10][10];
	rep(i,10)rep(j,10)kami[i][j]=0;
	
	int x,y,s;
	while(scanf(" %d,%d,%d", &x, &y, &s)){
		rep(i,lim[s-1]){
			li nx=x+dx[i];
			li ny=y+dy[i];
			if(min(nx,ny)>=0 && max(nx,ny)<10)kami[nx][ny]++;
		}
		
	}
	
	li siro=0;
	li ma=0;
	
	rep(i,10){
		rep(j,10){
			ma=max(ma,kami[i][j]);
			if(kami[i][j]==0)siro++;
		}
	}
	cout<<siro<<endl<<ma<<endl;
	
	return 0;
}

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

const int dx[] = {0, 0, 0, 1, -1, 1, 1, -1, -1, -2, 2, 0, 0};
const int dy[] = {0, 1, -1, 0, 0, 1, -1, 1, -1, 0, 0, -2, 2};

int main()
{
	int xy[10][10] = {0};
	int x,y,size;
	
	while(scanf("%d,%d,%d", &x,&y,&size) != EOF){
		if (size < 4){
			for (int d = 0; d < 1 + size * 4; d++){
				int nx, ny;
				nx = x + dx[d];
				ny = y + dy[d];
				if (nx >= 0 && nx < 10 && ny >= 0 && ny < 10){
					xy[nx][ny] += 1;
				}
			}
		}
	}
	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 <iostream>
#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 < 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 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 (cin >> x >> y >> size) {
		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;
}