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\n", count, max)
}

C++: #include<iostream>
#include<cstdio>
using namespace std;
#define loop(i,a,b) for(int i = a ; i < b ; i++)
#define rep(i,a) for(int i = 0 ; i < a ; i++) 

int maze[10][10];
int smallx[5] = {1,-1,0,0,0};
int smally[5] = {0,0,0,1,-1};
int midx[4] = {1,1,-1,-1};
int midy[4] = {1,-1,1,-1};
int largex[4] = {2,-2,0,0};
int largey[4] = {0,0,2,-2};

bool inmaze(int x,int y){
  return (0<=x && x<10) && (0<=y && y<10);
	     
}
void Fsmall(int x,int y){
  rep(i,5)
    if(inmaze(x+smallx[i],y+smally[i]))
       maze[x+smallx[i]][y+smally[i]]++;
       
}
void Fmid(int x,int y){
  rep(i,4)
    if(inmaze(x+midx[i],y+midy[i]))
       maze[x+midx[i]][y+midy[i]]++;
}
void Flarge(int x,int y){
  rep(i,5)
    if(inmaze(x+largex[i],y+largey[i]))
    maze[x+largex[i]][y+largey[i]]++;
}
int main(void){
  int x,y,size;
  rep(i,10)rep(j,10)maze[i][j] = 0;
  while(scanf("%d,%d,%d",&x,&y,&size)!=EOF)
    switch(size){
    case 3:
      Flarge(x,y);
    case 2:
      Fmid(x,y);
    case 1:
      Fsmall(x,y);
    }
  int no,ma;
  rep(i,10)rep(j,10){
    if(maze[i][j] == 0)no ++;
    ma = max(ma,maze[i][j]);
  }
  cout<<no<<endl<<ma<<endl;
  
}

C++: #include<iostream>
main(){int p[14][14],x,y,a,m=0;std::string s;for(x=0;x<14;x++)for(y=0;y<14;y++)p[x][y]=0;while(std::cin>>s){x=s.at(0)-45;y=s.at(2)-45;a=s.at(4)-48;p[x][y]++,p[x-1][y]++,p[x+1][y]++,p[x][y-1]++,p[x][y+1]++;if(a>1)p[x-1][y-1]++,p[x+1][y-1]++,p[x-1][y+1]++,p[x+1][y+1]++;if(a>2)p[x-2][y]++,p[x][y-2]++,p[x+2][y]++,p[x][y+2]++;}for(x=3,a=0;x<13;x++)for(y=3;y<13;y++)p[x][y]==0?a++:0,p[x][y]>m?m=p[x][y]:0;std::cout<<a<<"\n"<<m<<"\n";}

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

using namespace std;

int main(){
	int a[20][20];
	for(int i = 0;i < 20;i++){
		for(int j = 0;j < 20;j++){
			a[i][j] = 1000;
		}
	}
	for(int i = 5;i < 15;i++){
		for(int j = 5;j < 15;j++){
			a[i][j] = 0;
		}
	}
	int x, y, size;
	char b, c;
	int count = 0, hold = 0;
	while(cin >> x >> b >> y >> c >> size){
		int X = x+5, Y = y+5;
		if(size == 1){
			a[Y][X]++;
			a[Y+1][X]++;
			a[Y][X+1]++;
			a[Y-1][X]++;
			a[Y][X-1]++;
		}
		else if(size == 2){
			a[Y][X]++;
			a[Y+1][X]++;
			a[Y][X+1]++;
			a[Y-1][X]++;
			a[Y][X-1]++;
			a[Y+1][X+1]++;
			a[Y-1][X+1]++;
			a[Y-1][X-1]++;
			a[Y+1][X-1]++;
		}
		else if(size == 3){
			a[Y][X]++;
			a[Y+1][X]++;
			a[Y][X+1]++;
			a[Y-1][X]++;
			a[Y][X-1]++;
			a[Y+1][X+1]++;
			a[Y-1][X+1]++;
			a[Y-1][X-1]++;
			a[Y+1][X-1]++;
			a[Y-2][X]++;
			a[Y][X-2]++;
			a[Y+2][X]++;
			a[Y][X+2]++;
		}
		/*for(int i = 5;i < 15;i++){
			for(int j = 5;j < 15;j++){
				cout << a[i][j];
			}
			cout << endl;
		}
		cout << endl;*/

		count = 0, hold = 0;
		for(int i = 5;i < 15;i++){
			for(int j = 5;j < 15;j++){
				if(a[i][j] == 0) count++;
				else if(hold < a[i][j]) hold = a[i][j];
			}
		}

	}
	cout << count << endl;
	cout << hold << endl;
	return 0;
}

C++: #include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <ctime>
using namespace std;

typedef long long ll;
typedef pair<int, int> P;

#define all(c) (c).begin(), (c).end()
#define pb push_back
#define mp make_pair
#define EXIST(v,i) (find(all(v), i) != (v).end())
#define ERASE(v,i) (v).erase(remove(all(v), i), (v).end())
#define INDEX(v,i) (find(all(v), i) - (v).begin())
#define rep(i,n) for(int i = 0; i < (int)n; ++i)
#define debug(x) cerr << #x << " = " << (x) << endl;

inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}

const int INF = 100000000;
const double PI = 3.14159265358979323846;
const double EPS = 1e-10;

int main() {
	vector<P> small;
	vector<P> midium;
	vector<P> big;
	{
		small.pb(mp(0, -1));
		small.pb(mp(0, 1));
		small.pb(mp(1, 0));
		small.pb(mp(-1, 0));
	}
	{
		midium.pb(mp(-1, -1));
		midium.pb(mp(0, -1));
		midium.pb(mp(1, -1));
		midium.pb(mp(-1, 0));
		midium.pb(mp(1, 0));
		midium.pb(mp(-1, 1));
		midium.pb(mp(0, 1));
		midium.pb(mp(1, 1));
	}
	{
		big.pb(mp(-2, 0));
		big.pb(mp(-1, -1));
		big.pb(mp(-1, 0));
		big.pb(mp(-1, 1));
		big.pb(mp(0, -2));
		big.pb(mp(0, -1));
		big.pb(mp(0, 1));
		big.pb(mp(0, 2));
		big.pb(mp(1, -1));
		big.pb(mp(1, 0));
		big.pb(mp(1, 1));
		big.pb(mp(2, 0));
	}
	int field[10][10];
	memset(field, 0, sizeof field);
	for(int x, y, size; ~scanf(" %d,%d,%d", &x, &y, &size);) {
		vector<P> drop;
		if(size == 1) drop = small;
		else if(size == 2) drop = midium;
		else drop = big;
		for(int i = 0, n = drop.size(); i < n; i++) {
			int nx = x + drop[i].first;
			int ny = y + drop[i].second;
			if(0 <= nx && nx < 10 && 0 <= ny && ny < 10) {
				field[nx][ny]++;
			}
		}
	}
#if 0
	for(int i = 0; i < 10; i++) {
		for(int j = 0; j < 10; j++) {
			printf("%d", field[i][j]);
		}
		puts("");
	}
#endif
	int white = 0;
	int most = 0;
	rep(l, 10) {
		white += count(field[l], field[l] + 10, 0);
		most = max(most, *max_element(field[l], field[l] + 10));
	}
	printf("%d\n%d\n", white, most);
	return 0;
}