Please Check the error in my code

#1

here is my code:


it isn’t passing test cases but gives correct answer on custom input

#2

hi @Garvit012

I am familiar with a similar method
i can share that with u

bool compare(string x, string y)
{
	string xy = x.append(y);
	string yx = y.append(x);

	return xy.compare(yx) > 0 ? true : false;
}
int main()
{
	int t;
	cin >> t;
	while (t--)
	{
		int n, v1 = 0, v2 = 0;
		cin >> n;
		string s[n];
		cin.get();
		for (int i = 0; i < n; i++)
		{
			cin >> s[i];
		}
		sort(s, s + n, compare);
		for (int i = 0; i < n; i++)
			cout << s[i];
		cout << endl;
	}
}
#3

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