Language: C++

int main(void) {
	int n, a, b, c, d;
	cin >> n >> a >> b >> c >> d;
	a -= 1;b -= 1;c -= 1;d -= 1;
	char s[200001];
	for (int i = a;i < n;i++)cin >> s[i];

	if (c < d) {
		if (c > a + 1) {
			for (int i = a;i <= c - 1;i++) {
				if (s[i] == '#') {
					if (s[i + 1] == '#') {
						cout << "No"<<endl;
						return 0;
					}
				}
			}
		}
		if (d > b + 1) {
			for (int i = b;i <= d - 1;i++) {
				if (s[i] == '#') {
					if (s[i + 1] == '#') {
						cout << "No"<<endl;
						return 0;
					}
				}
			}
		}
		cout << "Yes"<<endl;
	}
	if (c > d) {
		for (int i = a;i <= c - 1;i++) {
			if (s[i] == '#') {
				if (s[i + 1] == '#') {
					cout << "No"<<endl;
					return 0;
				}
			}
		}
		bool flag1 = false,flag2 = false;
		if (s[b - 1] == '.'&&s[b + 1] == '.')flag1 = true;
		for (int i = b;i < d;i++) {
			if (s[i] == '.') {
				if (s[i + 1] == '.') {
					if (s[i + 2] == '.') {
						flag2 = true;
						break;
					}
				}
			}
		}
		if (flag1 || flag2) cout << "Yes" <<endl;
		else cout << "No" <<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:9: error: 'cin' was not declared in this scope
    3 |         cin >> n >> a >> b >> c >> d;
      |         ^~~
a.cc:13:49: error: 'cout' was not declared in this scope
   13 |                                                 cout << "No"<<endl;
      |                                                 ^~~~
a.cc:13:63: error: 'endl' was not declared in this scope
   13 |                                                 cout << "No"<<endl;
      |                                                               ^~~~
a.cc:23:49: error: 'cout' was not declared in this scope
   23 |                                                 cout << "No"<<endl;
      |                                                 ^~~~
a.cc:23:63: error: 'endl' was not declared in this scope
   23 |                                                 cout << "No"<<endl;
      |                                                               ^~~~
a.cc:29:17: error: 'cout' was not declared in this scope
   29 |                 cout << "Yes"<<endl;
      |                 ^~~~
a.cc:29:32: error: 'endl' was not declared in this scope
   29 |                 cout << "Yes"<<endl;
      |                                ^~~~
a.cc:35:41: error: 'cout' was not declared in this scope
   35 |                                         cout << "No"<<endl;
      |                                         ^~~~
a.cc:35:55: error: 'endl' was not declared in this scope
   35 |                                         cout << "No"<<endl;
      |                                                       ^~~~
a.cc:52:37: error: 'cout' was not declared in this scope
   52 |                 if (flag1 || flag2) cout << "Yes" <<endl;
      |                                     ^~~~
a.cc:52:53: error: 'endl' was not declared in this scope
   52 |                 if (flag1 || flag2) cout << "Yes" <<endl;
      |                                                     ^~~~
a.cc:53:22: error: 'cout' was not declared in this scope
   53 |                 else cout << "No" <<endl;
      |                      ^~~~
a.cc:53:37: error: 'endl' was not declared in this scope
   53 |                 else cout << "No" <<endl;
      |                                     ^~~~