Go: package main

import (
        "fmt"
)

var paper [10][10]int

func main() {
        var x, y, s int
        for {
                _, err := fmt.Scanf("%d,%d,%d", &x, &y, &s)
                if err != nil {
                        break
                }

                fill(x, y, s)
        }
        var d, z int
        for i := 0; i < 10; i++ {
                for j := 0; j < 10; j++ {
                        if paper[i][j] == 0 {
                                z += 1
                        }
                        if paper[i][j] > d {
                                d += 1
                        }
                }
        }
        fmt.Printf("%d\n%d\n", z, d)
}

func fill(x int, y int, s int) {
        paper[x][y] += 1
        if x > 0 {
                paper[x-1][y] += 1
        }
        if x < 9 {
                paper[x+1][y] += 1
        }
        if y > 0 {
                paper[x][y-1] += 1
        }
        if y < 9 {
                paper[x][y+1] += 1
        }

        if s >= 2 {
                if x > 0 && y > 0 {
                        paper[x-1][y-1] += 1
                }
                if x > 0 && y < 9 {
                        paper[x-1][y+1] += 1
                }
                if x < 9 && y > 0 {
                        paper[x+1][y-1] += 1
                }
                if x < 9 && y < 9 {
                        paper[x+1][y+1] += 1
                }
        }

        if s > 2 {
                if x > 1 {
                        paper[x-2][y] += 1
                }
                if x < 8 {
                        paper[x+2][y] += 1
                }
                if y > 1 {
                        paper[x][y-2] += 1
                }
                if y < 8 {
                        paper[x][y+2] += 1
                }
        }
}

C++: #include<stdio.h>

int main(void){
  int xs[] = {-1,0,0,1},ys[] = {0,-1,1,0};
  int xm[] = {-1,-1,-1,0,0,1,1,1}, ym[] = {-1,0,1,-1,1,-1,0,1};
  int xl[] = {-2,-1,-1,-1,0,0,0,0,1,1,1,2};
  int yl[] = {0,-1,0,1,-2,-1,1,2,-1,0,1,0};

  int x,y,n;
  int max = 0, cnt = 100;

  int map[14][14] = {0};

  while(scanf("%d,%d,%d",&x,&y,&n) != EOF){
    //printf("a\n");
    x += 2;
    y += 2;
    switch(n){
    case 1:
      map[x][y]++;
      if(map[x][y] > max)
	max = map[x][y];
      for(int i = 0; i < 4; i++){
	map[x + xs[i]][y + ys[i]]++;
	if(map[x+xs[i]][y + ys[i]] > max){
	  max = map[x + xs[i]][y + ys[i]];
	}
      }
      break;

    case 2:
      map[x][y]++;
      if(map[x][y] > max)
	max = map[x][y];
      for(int i = 0; i < 8; i++){
	map[x + xm[i]][y + ym[i]]++;
	if(map[x + xm[i]][y + ym[i]] > max){
	  max = map[x + xm[i]][y + ym[i]];
	}
      }
      break;

    case 3:
      map[x][y]++;
      if(map[x][y] > max)
	max = map[x][y];
      for(int i = 0; i < 12; i++){
	map[x + xl[i]][y + yl[i]]++;
	if(map[x + xl[i]][y + yl[i]] > max){
	  max = map[x + xl[i]][y + yl[i]];
	}
      }
      break;
    }
  }

  // printf("test\n");
  for(int i = 2; i < 12; i++){
    for(int j = 2; j < 12; j++){
      if(map[i][j] == 0){
	cnt++;
      }
    }
  }
    
  printf("%d\n%d",cnt,max);


  return 0;
}

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

using namespace std;

int sx[5] = {0, 1,  0, -1, 0};
int sy[5] = {0, 0, -1,  0, 1};

int mx[9] = {0, 1,  1,  0, -1, -1, -1, 0, 1};
int my[9] = {0, 0, -1, -1, -1,  0,  1, 1, 1};

int lx[13] = {0, 1,  1,  0, -1, -1, -1, 0, 1, 2,  0, -2, 0};
int ly[13] = {0, 0, -1, -1, -1,  0,  1, 1, 1, 0, -2,  0, 2};

int maze[10][10];

int i, j, xi, xj;

bool isValid(int a, int b) {
    return a >= 0 && b >= 0 && a < 10 && b < 10;
}

vector<string> split(string source, string pattern) {
    unsigned i, base = 0;
    vector<string> ret;
    string buff;

    for(i = 0; i < source.size(); i++) {
        if(source.substr(i, pattern.size()) == pattern) {
            ret.push_back(buff);
            i += pattern.size() - 1;
            buff.clear();
        } else {
            buff += source[i];
        }
    }
    ret.push_back(buff);
    return ret;
}

int main(void) {
    memset(maze, 0, sizeof(maze));

    int ai, aj, s;
    string p;
    vector<string> ok;

    while(getline(cin, p)) {
        ok.clear();
        ok = split(p, ",");

        aj = ok[1].size() > 1 ? 10 : ok[1][0] - '0';
        ai = ok[0].size() > 1 ? 10 : ok[0][0] - '0';
        s = ok[2].size() > 1 ? 10 : ok[2][0] - '0';

        if(s == 1) {
            for(i = 0; i < 5; i++) {
                xi = ai + sx[i];
                xj = aj + sy[i];

                if(isValid(xi, xj)) {
                    maze[xi][xj] += 1;
                }
            }
        } else if(s == 2) {
            for(i = 0; i < 9; i++) {
                xi = ai + mx[i];
                xj = aj + my[i];

                if(isValid(xi, xj)) {
                    maze[xi][xj] += 1;
                }
            }
        } else {
            for(i = 0; i < 13; i++) {
                xi = ai + lx[i];
                xj = aj + ly[i];

                if(isValid(xi, xj)) {
                    maze[xi][xj] += 1;
                }
            }
        }
    }

    int mx = 0, ct = 0;

    for(i = 0; i < 10; i++) {
        for(j = 0; j < 10; j++) {
            if(maze[i][j] == 0) ct += 1;
            mx = max(mx, maze[i][j]);
        }
    }
    printf("%d\n%d", ct, mx);
    return 0;
}

C++: #include<iostream>
int main(){
	int paper[10][10] = {};
	std::pair<int, int>pos;
	int ink;
	char h;
	int max = 0;
	int count = 0;
	while (std::cin >> pos.first >> h >> pos.second >> h >> ink) {
		paper[pos.first][pos.second]++;
		for (int i = 0; i < ink; ++i) {
			if (pos.first - i >= 0 && pos.second - i >= 0)paper[pos.first - i][pos.second - i]++;
			if (pos.first - i >= 0 && pos.second + i <= 9)paper[pos.first - i][pos.second + i]++;
			if (pos.first + i <= 9 && pos.second - i >= 0)paper[pos.first + i][pos.second - i]++;
			if (pos.first + i <= 9 && pos.second + i <= 9)paper[pos.first + i][pos.second + i]++;
		}
		for (int i = 0; i < 10; ++i) {
			for (int j = 0; j < 10; ++j) {
				if (paper[i][j] == 0)++count;
				else if (max < paper[i][j])max = paper[i][j];
			}
		}
	}
		std::cout << count << std::endl;
		std::cout << max << std::endl;
		return 0;
}

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

int paper[10][10]={0};

void small_ink(int x,int y){
  paper[y][x]++;
  if(x+1<10)paper[y][x+1];
  if(x-1>=0)paper[y][x-1];
  if(y+1<10)paper[y+1][x];
  if(y-1>=0)paper[y-1][x];
}
void midium_ink(int x,int y){
  for(int i=-1;i<2;i++){
    for(int j=-1;i<2;j++){
      if(y+i>=0 && y+i<10 && x+j>=0 && x+j<10)paper[y+i][x+j]++;
    }
  }
}
void big_ink(int x,int y){
  for(int i=-1;i<2;i++){
    for(int j=-1;i<2;j++){
      if(y+i>=0 && y+i<10 && x+j>=0 && x+j<10)paper[y+i][x+j]++;
    }
  }
  for(int i=-1;i<2;i=i+2){
    for(int j=-1;j<2;j=j+2){
      if(y+i*2>=0 && y+i*2<10 && x+j*2>=0 && x+j*2<10)paper[y+i*2][x+j*2]++;
    }
  }
}

int main(){
  int x,y,s;
  int white=0;
  int darkest=0;
  while(scanf("%d,%d,%d",&x,&y,&s)!=EOF){
    if(s==1)small_ink(x,y);
    else if(s==2)midium_ink(x,y);
    else if(s==3)big_ink(x,y);
  }
  for(int i=0;i<10;i++){
    for(int j=0;j<10;j++){
      if(paper[i][j]==0)white++;
      if(paper[i][j]>darkest)darkest=paper[i][j];
    }
  }
  cout<<white<<endl<<darkest<<endl;
}