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<iostream>
#include<cstdio>
using namespace std;
int main()
{
	int x,y,size;
	int paper[10][10] = { 0 };

	while(scanf("%d,%d,%d",&x,&y,&size) != EOF){
		switch (size){
			case 1 : 	paper[x][y] += 1;
							paper[x-1][y] += 1;
							paper[x+1][y] += 1;
							paper[x][y-1] += 1;
							paper[x][y+1] += 1;
							break;

			case 2 : 	paper[x][y] += 1;
							paper[x-1][y] += 1;
							paper[x+1][y] += 1;
							paper[x][y-1] += 1;
							paper[x][y+1] += 1;
							paper[x-1][y-1] += 1;
							paper[x-1][y+1] += 1;
							paper[x+1][y-1] += 1;
							paper[x+1][y+1] += 1;
							break;

			case 3 : 	paper[x][y] += 1;
							paper[x-1][y] += 1;
							paper[x+1][y] += 1;
							paper[x][y-1] += 1;
							paper[x][y+1] += 1;
							paper[x-1][y-1] += 1;
							paper[x-1][y+1] += 1;
							paper[x+1][y-1] += 1;
							paper[x+1][y+1] += 1;
							paper[x-2][y] += 1;
							paper[x+2][y] += 1;
							paper[x][y-2] += 1;
							paper[x][y+2] += 1;
							break;
		}
	}
	int zcount = 0;
	int density = 0;

	for(int i = 0;i < 10;i++){
		for(int j = 0;j < 10;j++){
			if(paper[i][j] == 0){
				zcount++;
			}
			if(density < paper[i][j]){
				density = paper[i][j];
			}
		}
	}

	cout << zcount << endl << density << endl;
}

C++: #include<iostream>
#include<string.h>
using namespace std;
int main()
{
    int ma[10][10];
    int x,y,d;
    char c;
    memset(ma,0,sizeof(ma));
    //while(cin>>x>>c>>y>>c>>d){
    for(int i=0;i<6;i++){
        
        cin>>x>>c>>y>>c>>d;
        
        ma[y][x]++;
        if(d==1){
            if(x>0){
                ma[y][x-1]++;
            }
            if(x<9){
                ma[y][x+1]++;
            }
            if(y>0){
                ma[y-1][x]++;
            }
            if(y<9){
                ma[y+1][x]++;
            }
        }
        else if(d==2){
            if(x>0){
                ma[y][x-1]++;
            }
            if(x<9){
                ma[y][x+1]++;
            }
            if(y>0){
                ma[y-1][x]++;
            }
            if(y<9){
                ma[y+1][x]++;
            }
            if(x>0&&y<9){
                ma[y+1][x-1]++;
            }
            if(x<9&&y>0){
                ma[y-1][x+1]++;
            }
            if(x>0&&y>0){
                ma[y-1][x-1]++;
            }
            if(x<9&&y<9){
                ma[y+1][x+1]++;
            }
        }
        else{
            if(x>0){
                ma[y][x-1]++;
            }
            if(x<9){
                ma[y][x+1]++;
            }
            if(y>0){
                ma[y-1][x]++;
            }
            if(y<9){
                ma[y+1][x]++;
            }
            if(x>0&&y<9){
                ma[y+1][x-1]++;
            }
            if(x<9&&y>0){
                ma[y-1][x+1]++;
            }
            if(x>0&&y>0){
                ma[y-1][x-1]++;
            }
            if(x<9&&y<9){
                ma[y+1][x+1]++;
            }
            if(x>1){
                ma[y][x-2]++;
            }
            if(x<8){
                ma[y][x+2]++;
            }
            if(y>1){
                ma[y-2][x]++;
            }
            if(y<8){
                ma[y+2][x]++;
            }
        }
    }
    int em=0,m=0;
    for(int i=0;i<10;i++){
        for(int j=0;j<10;j++){
            if(ma[i][j]==0)em++;
            m=max(m,ma[i][j]);
        }
    }
    cout<<em<<endl<<m<<endl;
    return 0;
}

C++: #include<iostream>
using namespace std;
void big(int x,int y,int a[10][10]);
void middle(int x,int y,int a[10][10]);
void small(int x,int y,int a[10][10]);
int main(){
	int a[10][10]={0};
	int x,y,s;
	char c;
	int cnt=0,max=0;
	while(cin>>x>>c>>y>>c>>s){
	if(s==3)big(x,y,a);
	else if(s==2)middle(x,y,a);
	else if(s==1)small(x,y,a);
	
	}
	for(int i=0;i<10;i++){
		for(int j=0;j<10;j++){
			if(a[i][j]==0)cnt++;
			if(a[i][j]>max)max=a[i][j];
			//cout<<a[i][j]<<" ";
		}
		//cout<<endl;
	}
	cout<<cnt<<endl<<max<<endl;
}

void big(int x,int y,int a[10][10]){
	a[x][y]++;
	a[x-2][y]++;a[x][y-2]++;
	a[x-1][y]++;a[x][y-1]++;
	a[x+1][y]++;a[x][y+1]++;
	a[x+2][y]++;a[x][y+2]++;	
	a[x+1][y+1]++;a[x-1][y-1]++;
	a[x+1][y-1]++;a[x-1][y+1]++;
	return ;
}

void middle(int x,int y,int a[10][10]){
	a[x][y]++;
	a[x+1][y]++;a[x][y+1]++;
	a[x-1][y]++;a[x][y-1]++;
	a[x+1][y+1]++;a[x-1][y-1]++;
	a[x+1][y-1]++;a[x-1][y+1]++;
}
void small(int x,int y,int a[10][10]){
	a[x][y]++;
	a[x+1][y]++;a[x][y+1]++;
	a[x-1][y]++;a[x][y-1]++;
}

C++: #include <iostream>
#include <algorithm>
using namespace std;
int dir[][2] = {{0, 0}, {1, 0}, {0, 1}, {1, 1}, {1, -1}, {-1, 1}, {-1, -1}, {2,
  0}, {0, 2}, {-2, 0}, {0, -2}};
int map[10][10], dens = 0, rest = 100;
void drop(int x, int y) {
  if (0 <= x && x < 10 && 0 <= y && y < 10) {
    if (map[x][y]++ == 0) rest--;
    dens = max(map[x][y], dens);
  }
}
int main() {
  for (int i = 0; i < 10; i++)
    for (int j = 0; j < 10; j++)
      map[i][j] = 0;
  int x, y, size;
  char c;
  while (cin >> x >> c >> y >> c >> size)
    for (int i = 0; i <= 4 * size; i++)
      drop(x + dir[i][0], y + dir[i][1]);
  cout << rest << endl << dens << endl;
}