[1316] 그룹 단어 체커

#include <iostream>
#include <string>
using namespace std;
bool sol(string check);
int main()
{
	int num;
	int cnt = 0;
	cin >> num;
	for (int i = 0; i < num; i++)
	{
		string str;
		cin >> str;
		if (sol(str))
		{
			cnt++;
		}
	}
	cout << cnt << endl;
	return 0;
}
bool sol(string check)
{
	bool alp[26] = { false, };
	for (int i = 0; i < check.length(); i++)
	{
		if (alp[check[i] - 'a'])
			return false;
		else
		{
			alp[check[i] - 'a'] = true;
			char temp = check[i];
			while (1)
			{
				if (temp != check[++i])
				{
					i--;
					break;
				}
			}
		}
	}
	return true;
}