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<stdio.h>
#include <algorithm>
#include <cassert>
#include <cctype>
#include <climits>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <iostream>
#include <iterator>
#include <list>
#include <map>     
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <iomanip>
#include <stack>
#include <string>
#include <vector>
using namespace std;
#define ll long long
#define ld long double
#define roop(a,t) for(int a=0;a<t;a++) 
int grid[14][14];
int main()
{
	cin.tie(0);
	ios::sync_with_stdio(false);
	int u;
	roop(i, 0) { roop(j, 0) { grid[i][j] = 0; } }
	int pow1x[5] = { 0,1,-1,0,0 };
	int pow1y[5] = { 0,0,0,1,-1 };
	int pow2x[9] = { 0,0,0,1,1,1,-1,-1,-1 };
	int pow2y[9] = { -1,0,1,-1,0,1,-1,0,1 };
	int pow3x[13] = { 0 ,0,0,0,0,1,1,1,-1,-1,-1,2,-2 };
	int pow3y[13] = { 2,1,0,-1,-2,1,0,-1,1,0,-1,0,0 };
	int x, y, power;
	char g, h;
	while (cin >> x >> g >> y >> h >> power) {
		
		x += 2; y += 2;
		power = power * 4 + 1;
		if (power == 5) {
			for (int i = 0; i < power; i++) {
				grid[pow1x[i] + x][pow1y[i] + y]++;
			}
		}
		else if (power == 9) {
			for (int i = 0; i < power; i++) {
				grid[pow2x[i] + x][pow2y[i] + y]++;
			}
		}
		else {
			for (int i = 0; i < power; i++) {
				grid[pow3x[i] + x][pow3y[i] + y]++;
			}
		}
	}
	int ans1 = 0;
	int ans2 = 0;
	for (int i = 2; i < 12; i++) {
		for (int j = 2; j < 12; j++) {
			ans2 = max(ans2, grid[i][j]);
			if (grid[i][j] > 0) {
				ans1++;
			}
			/////
			//cout<< grid[i][j]<<" ";
		}//cout<<endl;
	}
	
	cout << 100-ans1 << endl << ans2 << endl;
	return 0;
}

C++: #include <iostream>
#include <list>
#include <string>
#include <sstream>
#include <stdlib.h>
#include <cmath>

using namespace std;

void drip1(int x, int y,int square[10][10]){
    int i;
    for(i=x-1;i<=x+1;i++){
        if(i>=0 && i<10)square[i][y] += 1;
    }
    for(i=y-1;i<=y+1;i+=2){
        if(i>=0 && i<10)square[x][i] += 1;
    }
    
}

void drip2(int x, int y,int square[10][10]){
    for(int i=x-1;i<=x+1;i++){
        for(int j=y-1;j<=y+1;j++){
            if(i>=0 && j>=0 && i<10 && j<10){
                square[i][j] += 1;
            }
        }
    }

}

void drip3(int x, int y,int square[10][10]){
    
    for(int i=x-2;i<=x+2;i++){
        for(int j=y-2+abs(x-i); j<=y+2-abs(x-i); j++){
            if(i>=0 && j>=0 && i<10 && j<10){
                square[i][j] += 1;
            }
        }
    }
}



int main (int argc, char const* argv[]){
    int square[10][10]={};
    int size,x,y, count=0, max=0;
    string str, tmp;
    list<int> xysize;
    
    while(getline(cin,str)){
        stringstream ss(str);
        xysize.clear();
        
        while(getline(ss,tmp,',')){
            xysize.push_back(atoi(tmp.c_str()));
        }
        list<int>::iterator it = xysize.begin();
        x = *(it++);
        y = *(it++);
        size = *(it);
        
        
        if(size==1){
            drip1(x,y,square);
        }else if(size==2){
            drip2(x,y,square);
        }else if(size==3){
            drip3(x,y,square);
        }
    }
    for(int i=0;i<10;i++){
        for(int j=0;j<10;j++){
            if(square[i][j]==0)count++;
            if(max < square[i][j]) max = square[i][j];
        }
    }

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

C++: #include<iostream>
#include<stdio.h>
using namespace std;
int main(){
	int a[10][10]={},x,y,size,dumy=0,max=0,ans=0;
	int mx[12]={0,-1,1,0,-1,1,-1,1,0,-2,2,0},my[12]={-1,0,0,1,-1,-1,1,1,-2,0,0,2};
	while(scanf("%d,%d,%d",&x,&y,&size)!=EOF){
		dumy=4*size;
		//cout<<size<<endl;
		for(int i=0;i<dumy;i++){
			if(x+mx[i]>=0&&y+my[i]>=0&&x+mx[i]<10&&y+my[i]<10)
			a[x+mx[i]][y+my[i]]++;
		}
	}
	for(int i=0;i<10;i++){
		for(int j=0;j<10;j++){
			if(a[i][j]==0){
				ans++;
			}else{
				if(max<=a[i][j])
				max=a[i][j];
			}
		}
	}
	cout<<ans<<endl<<max<<endl;
return 0;
}