Submission #6436113

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

int main(){

	int h, w;
	cin >> h >> w;

	string str;
	for (int i = 0; i < w + 2; i++) {
		str += ".";
	}

	vector<string> s(h+2,str);

	for (int i = 1; i <= h; i++) {
		cin >> s[i];
		s[i] += "..";
		for (int j = w; j >=1; j--) {
			swap(s[i][j], s[i][j - 1]);
		}
	}

	for (int i = 1; i <= h; i++) {
		for (int j = 1; j <= w; j++) {
			if (s[i][j] == '#') {
				int counter = 0;
				if (s[i - 1][j] == '#') { counter++; }
				if (s[i + 1][j] == '#') { counter++; }
				if (s[i][j-1] == '#') { counter++; }
				if (s[i][j+1] == '#') { counter++; }
				if (counter == 0) { cout << "No" << endl; return 0; }
			}
		}
	}
	cout << "Yes" << endl;
}

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