#include #include #include using namespace std; int main() { int r,c; char s; bool b; cin >> r >> c >> s >> b; for(int i=1;i<=r;i++) { for(int j=1;j<=c;j++) {

		if(i == 1 || i == r || j == 1 || j == c)
		{
			cout << s;
		}else{
			if(b == 1)cout << s;
			else cout << " ";
		}
	}
	cout << endl;
}
return 0;

}