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>

using namespace std;

int paper[10][10];

void init() {
    for (int i = 0; i < 10; i++) 
        for (int j = 0; j < 10; j++) 
            paper[i][j] = 0;
}

void drop_small(int x, int y) {
    paper[y][x]++;
    int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
    for (int i = 0; i < 4; i++) {
        if (y + dy[i] >= 10 || x + dx[i] >= 10) continue;
        if (y + dy[i] < 0  || x + dx[i] < 0 ) continue;
        paper[ y+dy[i] ][ x+dx[i] ]++;
    }
}

void drop_middle(int x, int y) {
    drop_small(x, y);
    int dx[4] = {1, 1, -1, -1}, dy[4] = {1, -1, 1, -1};
    for (int i = 0; i < 4; i++) {
        if (y + dy[i] >= 10 || x + dx[i] >= 10) continue;
        if (y + dy[i] < 0  || x + dx[i] < 0 ) continue;
        paper[ y+dy[i] ][ x+dx[i] ]++;
    }
}
    
void drop_large(int x, int y) {
    drop_middle(x, y);
    int dx[4] = {2, 0, -2, 0}, dy[4] = {0, 2, 0, -2};
    for (int i = 0; i < 4; i++) {
        if (y + dy[i] >= 10 || x + dx[i] >= 10) continue;
        if (y + dy[i] < 0  || x + dx[i] < 0 ) continue;
        paper[ y+dy[i] ][ x+dx[i] ]++;
    }
}

int main() {
    init();
    int x, y, s;
    char d;
    while (cin >> x >> d >> y >> d >> s) {
        switch (s) {
            case 1:
                drop_small(x, y);
                break;
            case 2:
                drop_middle(x, y);
                break;
            case 3:
                drop_large(x, y);
                break;
        }
    }

    int most = 0;
    int clean = 0;

    for (int i = 0; i < 10; i++) {
        for (int j = 0; j < 10; j++) {
            if (paper[i][j] == 0) clean++;
            if (paper[i][j] > most) most = paper[i][j];
        }
    }

    cout << clean << endl;
    cout << most << endl;
    
    return 0;
}

C++: #include<stdio.h>
#include<iostream>
#include<algorithm>
using namespace std;
int pos[10][10];
/*void p(){
	for(int i=0;i<10;++i){
		for(int j=0;j<10;++j){
			cout<<pos[i][j]<<" ";
		}
		cout<<endl;
	}
	cout<<endl;
}*/
main(){
	int tmp[3],ink2[3]={1,1,2};
	int ink[3][5][5]={
		{{0,1,0,0,0},{1,1,1,0,0},{0,1,0,0,0},{0,0,0,0,0},{0,0,0,0,0}},
		{{1,1,1,0,0},{1,1,1,0,0},{1,1,1,0,0},{0,0,0,0,0},{0,0,0,0,0}},
		{{0,0,1,0,0},{0,1,1,1,0},{1,1,1,1,1},{0,1,1,1,0},{0,0,1,0,0}}
	};
	for(int i=0;i<10;++i)
		for(int j=0;j<10;++j)
			pos[i][j]=0;
	while(cin>>tmp[0]){
		scanf(",%d,%d",&tmp[1],&tmp[2]);
		for(int i=0;i<5;++i){
			for(int j=0;j<5;++j){
				int t[2]={tmp[0]-ink2[tmp[2]-1]+i,tmp[1]-ink2[tmp[2]-1]+j};
				if(t[0]>=0 && t[0]<=9 && t[1]>=0 && t[1]<=9){
					pos[t[0]][t[1]]+=ink[tmp[2]-1][i][j];
				}
			}
		}
	}
	int ans[2]={0,0};
	for(int i=0;i<10;++i){
		for(int j=0;j<10;++j){
			if(pos[i][j]==0)ans[0]++;
			ans[1]=max(pos[i][j],ans[1]);
		}
	}
	cout<<ans[0]<<" "<<ans[1]<<endl;
}

C++: #include<iostream>
#include<algorithm>
using namespace std;
int main()
{
	int bigx[4] = { 0, 2, 0, -2 };
	int bigy[4] = { 2, 0, -2, 0 };
	int smx[4] = {0,1,0,-1};
	int smy[4] = {1,0,-1,0};
	int midx[9] = { -1, -1, 0, 1, 1,  1,  0, -1 };
	int midy[9] = {  0,  1, 1, 1, 0, -1, -1, -1 };
	int map[10][10] = { 0 };
	int cnt = 100;
	int x, y, size;
	char s, d;
	int ma = 0;
	int c = 0;
	while (cin >> x >> s >> y >> d >> size){
		
		if (size == 1){
			for (int i = 0; i < 4; i++){
				int xx = smx[i] + x;
				int yy = smy[i] + y;
				if (xx >= 0 && xx < 10 && y >= 0 && y < 10){
					map[xx][yy]++;
				}
			}
		}
		else if (size == 2){
			for (int i = 0; i < 8; i++){
				int xx = midx[i] + x;
				int yy = midy[i] + y;
				if (xx >= 0 && xx < 10 && y >= 0 && y < 10){
					map[xx][yy]++;
				}
			}
		}
		else if(size==3) {
			for (int i = 0; i < 4; i++){
				int xx = bigx[i] + x;
				int yy = bigy[i] + y;
				if (xx >= 0 && xx < 10 && y >= 0 && y < 10){
					map[xx][yy]++;
				}
			}
			for (int i = 0; i < 8; i++){
				int xx = midx[i] + x;
				int yy = midy[i] + y;
				if (xx >= 0 && xx < 10 && y >= 0 && y < 10){
					map[xx][yy]++;
				}
			}
		}
	}
	/*for (int i = 0; i < 10; i++){
		for (int i2 = 0; i2 < 10; i2++){
			cout << map[i][i2] << " ";
			if (map[i][i2] != 0){
				cnt--;
			}
			ma = max(ma, map[i][i2]);
		}cout << endl;
	}*/
	cout << ma << endl;
	cout << cnt << endl;
}

C++: #include <cstdio>
#include <iostream>
#include <string>

using namespace std;

int main() {

	int x, y, ink, blank=0, max=0, m[10][10];
	int mx[]={0, 1, 0, -1, 1, 1, -1, -1, 0, 2, 0, -2};
	int my[]={1, 0, -1, 0, 1, -1, -1, 1, 2, 0, -2, 0};

	for(x=0; x<10; x++) {
		for(y=0; y<10; y++) {
			m[x][y]=0;
		}
	}

	while(scanf("%d, %d, %d", &x, &y, &ink)!=EOF) {
		m[x][y]++;
		for(int i=0; i<ink*4; i++) {
			int dx=x+mx[i];
			int dy=y+my[i];
			if(x>=0&&x<=9&&y>=0&&y<=9)
				m[dx][dy]++;
		}
	}

	for(int i=0; i<10; i++) {
		for(int j=0; j<10; j++) {
			if(m[i][j]==0)
				blank++;
			if(m[i][j]>max)
				max=m[i][j];
		}
	}

	cout << blank << endl << max << endl;

	return 0;

}