[[TableOfContents]]

= 오늘의 문제 =
 * [https://www.acmicpc.net/problem/2667|단지번호붙이기]

= 참가자 =
 * 박인서
= 코드 =
== 15이원준 ==

== 박인서 ==
{{{
#include <iostream>
#include <vector>
#include <algorithm>
char a[30][30];
bool visit[30][30];
int n;
std::vector<int> res;
 
int dfs (int i,int j){
    int cnt=1;
    visit[i][j]=true;
     
    if (i!=1 && a[i-1][j]=='1' && !visit[i-1][j])
        cnt+=dfs(i-1,j);
    if (i!=n && a[i+1][j]=='1' && !visit[i+1][j])
        cnt+=dfs(i+1,j);
    if (j!=1 && a[i][j-1]=='1' && !visit[i][j-1])
        cnt+=dfs(i,j-1);
    if (j!=n && a[i][j+1]=='1' && !visit[i][j+1])
        cnt+=dfs(i,j+1);
         
    return cnt;
}
 
int main (){
    std::cin>>n;
    for (int i=1;i<=n;i++){
        for (int j=1;j<=n;j++){
            std::cin>>a[i][j];
        }
    }
     
     
    for (int i=1;i<=n;i++){
        for (int j=1;j<=n;j++){
            if (a[i][j]=='1' && !visit[i][j])
                res.push_back(dfs(i,j));
        }
    }
     
    std::cout<<res.size()<<std::endl;
    std::sort(res.begin(),res.end());
    for(int i=0;i<res.size();i++)
        std::cout<<res[i]<<std::endl;
     
    return 0;
}
}}}

== 곽정흠 ==

= 아이디어 =
== 15이원준 ==

== 박인서 ==

== 곽정흠 ==