백준 3005번 크로스워드 퍼즐 쳐다보기 C++

https://www.acmicpc.net/problem/3005

3005번: 크로스워드 퍼즐 쳐다보기

 

#include <iostream>
#include <string>
#include <vector>
#include <math.h>
#include <algorithm>
#include <utility>
#include <stack>
#include <queue>
#include <math.h>
#include <set>
#include <map>
#include <list>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <limits.h>

using namespace std;
using int64 = long long; 

int r, c;
vector<vector<char>> v;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    cin >> r >> c;
    v = vector<vector<char>>(r, vector<char>(c));
    for (int i = 0; i < r; i++) {
        for (int j = 0; j < c; j++) {
            cin >> v[i][j];
        }
    }
    set<string> s;
    for (int i = 0; i < r; i++) {
        string str = "";
        for (int j = 0; j < c; j++) {
            if (v[i][j] == '#') {
                if (str.length() >= 2) s.insert(str);
                str = "";
                continue;
            }
            str += v[i][j];
        }
        if (str.length() >= 2) s.insert(str);
    }
    for (int i = 0; i < c; i++) {
        string str = "";
        for (int j = 0; j < r; j++) {
            if (v[j][i] == '#') {
                if (str.length() >= 2) s.insert(str);
                str = "";
                continue;
            }
            str += v[j][i];
        }
        if (str.length() >= 2) s.insert(str);
    }
    string ans = *s.begin();
    cout << ans;
}